diff --git a/schemas/beta-Prod.csdl b/schemas/beta-Prod.csdl
index cdb9f188e..332d67676 100644
--- a/schemas/beta-Prod.csdl
+++ b/schemas/beta-Prod.csdl
@@ -133,6 +133,12 @@
         <Member Name="personal" Value="2" />
         <Member Name="unrestricted" Value="3" />
       </EnumType>
+      <EnumType Name="activityStatus">
+        <Member Name="notStarted" Value="0" />
+        <Member Name="running" Value="1" />
+        <Member Name="failed" Value="2" />
+        <Member Name="unknownFutureValue" Value="3" />
+      </EnumType>
       <EnumType Name="activityType">
         <Member Name="signin" Value="0" />
         <Member Name="user" Value="1" />
@@ -2725,6 +2731,10 @@
         <Member Name="failed" Value="4" />
         <Member Name="unknownFutureValue" Value="127" />
       </EnumType>
+      <EnumType Name="connectionType">
+        <Member Name="webSocket" Value="0" />
+        <Member Name="unknownFutureValue" Value="1" />
+      </EnumType>
       <EnumType Name="connectorGroupRegion">
         <Member Name="nam" Value="0" />
         <Member Name="eur" Value="1" />
@@ -11433,6 +11443,10 @@
       <ComplexType Name="activityMetadata">
         <Property Name="activity" Type="graph.userActivityType" Nullable="false" />
       </ComplexType>
+      <ComplexType Name="activityTransport">
+        <Property Name="connectionType" Type="graph.connectionType" Nullable="false" />
+        <Property Name="url" Type="Edm.String" />
+      </ComplexType>
       <ComplexType Name="addContentFooterAction" BaseType="graph.informationProtectionAction">
         <Property Name="alignment" Type="graph.contentAlignment" Nullable="false" />
         <Property Name="fontColor" Type="Edm.String" />
@@ -12331,6 +12345,11 @@
       <ComplexType Name="azureSource" BaseType="graph.authorizationSystemIdentitySource">
         <Property Name="subscriptionId" Type="Edm.String" />
       </ComplexType>
+      <ComplexType Name="baseActivity" Abstract="true">
+        <Property Name="resultInfo" Type="graph.resultInfo" />
+        <Property Name="status" Type="graph.activityStatus" Nullable="false" />
+        <Property Name="transport" Type="graph.activityTransport" />
+      </ComplexType>
       <ComplexType Name="baseEndUserNotification">
         <Property Name="defaultLanguage" Type="Edm.String" />
         <NavigationProperty Name="endUserNotification" Type="graph.endUserNotification" />
@@ -19090,6 +19109,10 @@
       <ComplexType Name="spaApplication">
         <Property Name="redirectUris" Type="Collection(Edm.String)" Nullable="false" />
       </ComplexType>
+      <ComplexType Name="speakerInfo">
+        <Property Name="displayName" Type="Edm.String" />
+        <Property Name="rawId" Type="Edm.String" />
+      </ComplexType>
       <ComplexType Name="specialFolder">
         <Property Name="name" Type="Edm.String" />
       </ComplexType>
@@ -19181,6 +19204,9 @@
         <Property Name="status" Type="graph.subjectRightsRequestStageStatus" />
       </ComplexType>
       <ComplexType Name="subjectSet" Abstract="true" />
+      <ComplexType Name="subscriptionActivities">
+        <Property Name="transcript" Type="graph.transcriptActivity" />
+      </ComplexType>
       <ComplexType Name="substringTransformation" BaseType="graph.customClaimTransformation">
         <Property Name="index" Type="Edm.Int32" Nullable="false" />
         <Property Name="length" Type="Edm.Int32" />
@@ -19817,10 +19843,22 @@
       <ComplexType Name="trainingSetting" Abstract="true">
         <Property Name="settingType" Type="graph.trainingSettingType" />
       </ComplexType>
+      <ComplexType Name="transcriptActivity" BaseType="graph.baseActivity" />
       <ComplexType Name="transcriptionState">
         <Property Name="sequenceNumber" Type="Edm.Int32" />
         <Property Name="state" Type="graph.mediaState" Nullable="false" />
       </ComplexType>
+      <ComplexType Name="transcriptPayload">
+        <Property Name="audioCaptureDateTime" Type="Edm.DateTimeOffset" />
+        <Property Name="sequenceId" Type="Edm.Int32" />
+        <Property Name="speaker" Type="graph.transcriptSpeaker" />
+        <Property Name="spokenLanguage" Type="Edm.String" />
+        <Property Name="text" Type="Edm.String" />
+      </ComplexType>
+      <ComplexType Name="transcriptSpeaker">
+        <Property Name="room" Type="graph.speakerInfo" />
+        <Property Name="user" Type="graph.speakerInfo" />
+      </ComplexType>
       <ComplexType Name="transformationAttribute">
         <Property Name="attribute" Type="graph.customClaimAttributeBase" Nullable="false" />
         <Property Name="treatAsMultiValue" Type="Edm.Boolean" Nullable="false" />
@@ -24900,11 +24938,15 @@
       <EntityType Name="copilotAdminSetting" BaseType="graph.entity">
         <NavigationProperty Name="limitedMode" Type="graph.copilotAdminLimitedMode" ContainsTarget="true" />
       </EntityType>
+      <EntityType Name="copilotCommunicationsRoot" BaseType="graph.entity">
+        <NavigationProperty Name="realtimeActivityFeed" Type="graph.realtimeActivityFeedRoot" ContainsTarget="true" />
+      </EntityType>
       <EntityType Name="copilotPeopleAdminSetting" BaseType="graph.entity">
         <NavigationProperty Name="enhancedPersonalization" Type="graph.enhancedPersonalizationSetting" ContainsTarget="true" />
       </EntityType>
       <EntityType Name="copilotRoot">
         <NavigationProperty Name="admin" Type="graph.copilotAdmin" ContainsTarget="true" />
+        <NavigationProperty Name="communications" Type="graph.copilotCommunicationsRoot" ContainsTarget="true" />
         <NavigationProperty Name="interactionHistory" Type="graph.aiInteractionHistory" ContainsTarget="true" />
         <NavigationProperty Name="settings" Type="graph.copilotSetting" ContainsTarget="true" />
         <NavigationProperty Name="users" Type="Collection(graph.aiUser)" ContainsTarget="true" />
@@ -30910,6 +30952,13 @@
         <NavigationProperty Name="signUps" Type="Collection(graph.userSignUpMetric)" />
         <NavigationProperty Name="summary" Type="Collection(graph.insightSummary)" />
       </EntityType>
+      <EntityType Name="multiActivitySubscription" BaseType="graph.entity" OpenType="true">
+        <Property Name="activities" Type="graph.subscriptionActivities" />
+        <Property Name="callbackUrl" Type="Edm.String" />
+        <Property Name="chatInfo" Type="graph.chatInfo" />
+        <Property Name="meetingInfo" Type="graph.meetingInfo" />
+        <Property Name="userId" Type="Edm.String" />
+      </EntityType>
       <EntityType Name="multiTenantOrganization" BaseType="graph.entity">
         <Property Name="createdDateTime" Type="Edm.DateTimeOffset" />
         <Property Name="description" Type="Edm.String" />
@@ -32863,6 +32912,16 @@
         <Property Name="wordsAccuracyPercentage" Type="Edm.Double" Nullable="false" />
         <Property Name="wordsPerMinute" Type="Edm.Double" Nullable="false" />
       </EntityType>
+      <EntityType Name="realtimeActivityFeedRoot" BaseType="graph.entity">
+        <NavigationProperty Name="meetings" Type="Collection(graph.realtimeActivityMeeting)" ContainsTarget="true" />
+        <NavigationProperty Name="multiActivitySubscriptions" Type="Collection(graph.multiActivitySubscription)" ContainsTarget="true" />
+      </EntityType>
+      <EntityType Name="realtimeActivityMeeting" BaseType="graph.entity">
+        <NavigationProperty Name="transcripts" Type="Collection(graph.realTimeTranscript)" ContainsTarget="true" />
+      </EntityType>
+      <EntityType Name="realTimeTranscript" BaseType="graph.entity" OpenType="true">
+        <Property Name="payloads" Type="Collection(graph.transcriptPayload)" Nullable="false" />
+      </EntityType>
       <EntityType Name="recommendation" BaseType="graph.recommendationBase" />
       <EntityType Name="recommendationBase" BaseType="graph.entity">
         <Property Name="actionSteps" Type="Collection(graph.actionStep)" />
@@ -59652,6 +59711,13 @@
       <Annotations Target="microsoft.graph.copilotRoot">
         <Annotation Term="Org.OData.Core.V1.Description" String="Root singleton for all Copilot APIs on Microsoft Graph." />
       </Annotations>
+      <Annotations Target="microsoft.graph.copilotRoot/communications">
+        <Annotation Term="Org.OData.Capabilities.V1.UpdateRestrictions">
+          <Record>
+            <PropertyValue Property="Upsertable" Bool="true" />
+          </Record>
+        </Annotation>
+      </Annotations>
       <Annotations Target="microsoft.graph.countryRegion">
         <Annotation Term="Org.OData.Capabilities.V1.DeleteRestrictions">
           <Record>
@@ -85873,6 +85939,27 @@
       <Annotations Target="microsoft.graph.ratingUnitedStatesTelevisionType/parentalGuidance">
         <Annotation Term="Org.OData.Core.V1.Description" String="TV-PG, parental guidance" />
       </Annotations>
+      <Annotations Target="microsoft.graph.realtimeActivityFeedRoot/meetings">
+        <Annotation Term="Org.OData.Capabilities.V1.UpdateRestrictions">
+          <Record>
+            <PropertyValue Property="Upsertable" Bool="true" />
+          </Record>
+        </Annotation>
+      </Annotations>
+      <Annotations Target="microsoft.graph.realtimeActivityFeedRoot/multiActivitySubscriptions">
+        <Annotation Term="Org.OData.Capabilities.V1.UpdateRestrictions">
+          <Record>
+            <PropertyValue Property="Upsertable" Bool="true" />
+          </Record>
+        </Annotation>
+      </Annotations>
+      <Annotations Target="microsoft.graph.realtimeActivityMeeting/transcripts">
+        <Annotation Term="Org.OData.Capabilities.V1.UpdateRestrictions">
+          <Record>
+            <PropertyValue Property="Upsertable" Bool="true" />
+          </Record>
+        </Annotation>
+      </Annotations>
       <Annotations Target="microsoft.graph.rebootNow(microsoft.graph.managedDevice)">
         <Annotation Term="Org.OData.Core.V1.Description" String="Reboot device" />
       </Annotations>
diff --git a/schemas/v1.0-Mooncake.csdl b/schemas/v1.0-Mooncake.csdl
index 56a6d2535..966e9c65a 100644
--- a/schemas/v1.0-Mooncake.csdl
+++ b/schemas/v1.0-Mooncake.csdl
@@ -12495,6 +12495,14 @@
         <Parameter Name="bindingParameter" Type="Collection(graph.team)" />
         <ReturnType Type="Collection(graph.chatMessage)" />
       </Function>
+      <Function Name="getAllRetainedMessages" EntitySetPath="bindingParameter/messages" IsBound="true">
+        <Parameter Name="bindingParameter" Type="Collection(graph.channel)" />
+        <ReturnType Type="Collection(graph.chatMessage)" />
+      </Function>
+      <Function Name="getAllRetainedMessages" EntitySetPath="bindingParameter/messages" IsBound="true">
+        <Parameter Name="bindingParameter" Type="Collection(graph.chat)" />
+        <ReturnType Type="Collection(graph.chatMessage)" />
+      </Function>
       <Function Name="getAllSites" IsBound="true">
         <Parameter Name="bindingParameter" Type="Collection(graph.site)" />
         <ReturnType Type="Collection(graph.site)" />