For the first question, I don’t know. It’s uncharted territory.

And as per the second question, it’s dependent on what exactly happens. Term limits apply to the elections, not time spent in office or anything else. The clock only starts ticking when someone is sworn into office. So Trump getting sent to jail could actually give him a third term if he only serves two years. But there’s like a 90% chance he doesn’t survive the next four years.