4:55 might seem acceptable. It's the half hour before court is scheduled to end with the, "This might be a good place to break" that is more frustrating. Those half hours add up. I think they would rather go 15 mintues later instead of ending a half hour or more early.
I don't think that is true. If you remember, one of them sent a note about making sure they stop on time because they work at night and need to get to work.