Predict he jibbers and jabbers at the beginning about his "successes" and about Ukraine for at least 15 mins, to burn up time....
I say he's done with it in 1 hour because of Sundowning.
Bet he reads aloud at least one prompt such as "Stop Here" during the hour.
Doocy will be called on early, to get him out of way.
One hour, I’d be surprised it goes that long. it’s 4pm and no https://www.whitehouse.gov/live/ feed up