I've tested this in Schotland last 10 days. It is not very easy in AA. I will call it nearly impossible. You need to phone to do it properly. That is something i want to avoid.
When i restart a route after a lunch or some other reason (not resuming). I expect from the navigation that it knows where i am and that it guides me back to the closest point on the route without any user input. No manual skipping waypoints etc.
I have no touchscreen on my bike and not in my car. I can not zoom in or out in Android Auto. Because of this i do not know what my previous or next routepoint is. In Android Auto you can only skip one routepoint at the time. But where do i need to stop.