diff --git a/packages/devtools_app/lib/src/service_manager.dart b/packages/devtools_app/lib/src/service_manager.dart
index a4226c56914..a40e5ddaeab 100644
--- a/packages/devtools_app/lib/src/service_manager.dart
+++ b/packages/devtools_app/lib/src/service_manager.dart
@@ -245,6 +245,19 @@ class ServiceConnectionManager {
 
     service.onEvent(serviceStreamName).listen(handleServiceEvent);
 
+    _connectedState.value = const ConnectedState(true);
+
+    final isolates = [
+      ...vm.isolates,
+      if (preferences.vmDeveloperModeEnabled.value) ...vm.systemIsolates,
+    ];
+
+    await isolateManager.init(isolates);
+    if (service != this.service) {
+      // A different service has been opened.
+      return;
+    }
+
     final streamIds = [
       EventStreams.kDebug,
       EventStreams.kExtension,
@@ -258,9 +271,9 @@ class ServiceConnectionManager {
       serviceStreamName,
     ];
 
-    for (final id in streamIds) {
+    await Future.wait(streamIds.map((String id) async {
       try {
-        unawaited(service.streamListen(id));
+        await service.streamListen(id);
       } catch (e) {
         if (id.endsWith('Logging')) {
           // Don't complain about '_Logging' or 'Logging' events (new VMs don't
@@ -272,21 +285,7 @@ class ServiceConnectionManager {
           );
         }
       }
-    }
-
-    if (service != this.service) {
-      // A different service has been opened.
-      return;
-    }
-
-    _connectedState.value = const ConnectedState(true);
-
-    final isolates = [
-      ...vm.isolates,
-      if (preferences.vmDeveloperModeEnabled.value) ...vm.systemIsolates,
-    ];
-
-    await isolateManager.init(isolates);
+    }));
     if (service != this.service) {
       // A different service has been opened.
       return;