diff --git a/flow/connectors/postgres/client.go b/flow/connectors/postgres/client.go
index 371510adbb..0b87e84078 100644
--- a/flow/connectors/postgres/client.go
+++ b/flow/connectors/postgres/client.go
@@ -624,7 +624,12 @@ func (c *PostgresConnector) CheckReplicationPermissions(username string) error {
 	}
 
 	if !replicationRes {
-		return fmt.Errorf("postgres user does not have replication role")
+		// RDS case: check pg_settings for rds.logical_replication
+		var setting string
+		err := c.pool.QueryRow(c.ctx, "SELECT setting FROM pg_settings WHERE name = 'rds.logical_replication';").Scan(&setting)
+		if err != nil || setting != "on" {
+			return fmt.Errorf("postgres user does not have replication role")
+		}
 	}
 
 	// check wal_level
diff --git a/ui/app/mirrors/edit/[mirrorId]/cdcDetails.tsx b/ui/app/mirrors/edit/[mirrorId]/cdcDetails.tsx
index 5a635eee1e..24f4c2ac38 100644
--- a/ui/app/mirrors/edit/[mirrorId]/cdcDetails.tsx
+++ b/ui/app/mirrors/edit/[mirrorId]/cdcDetails.tsx
@@ -17,7 +17,13 @@ type props = {
   createdAt?: Date;
 };
 function CdcDetails({ syncs, createdAt, mirrorConfig }: props) {
-  let lastSyncedAt = moment(syncs[0]?.endTime).fromNow();
+  let lastSyncedAt = moment(
+    syncs.length > 1
+      ? syncs[1]?.endTime
+      : syncs.length
+        ? syncs[0]?.startTime
+        : new Date()
+  ).fromNow();
   let rowsSynced = syncs.reduce((acc, sync) => {
     if (sync.endTime !== null) {
       return acc + sync.numRows;