You look at what Claude’s doing to make sure it doesn’t go off the rails? Personally, I either move on to another ask in parallel or just read my phone. Trying to catch things by manually looking at its output doesn’t seem like a recipe for success.
If you have an unlimited budget, obviously you will tend to let it run and correct it in the next iteration.
If you often run tight up against your 5-hour window, you're going to be more likely to babysit it.