Has anyone succeeded in obtaining a refresh token using Android .NET (i.e. former Xamarin)?

Asking for offline access and thereby getting into 'HasResolution == true' will inevitable fail.

Passing an IntentSenderRequest to ActivityResultLauncher.Launch() is failing with an error message: 'cannot cast IntentSenderRequest to Intent'

I almost about to give up on this and continue using the deprecated GoogleSignInClient API.

Please help!