As per my other comment -- after some experimentation, Trusted Contacts is a bit rubbish. It insists on asking user permission at the b-end each time, with a d

As per my other comment -- after some experimentation, Trusted Contacts is a bit rubbish. It insists on asking user permission at the b-end each time, with a display-on request, and waiting a full 5 minutes (non-configurable) for a response.