Doubt it cause it would cut into how many times they can play that movie in a day. It’s already a long movie, intermission breaks would just make it even longer. Non blockbusters ? Sure they could do that. The Batman is gonna want every screen possible as many times as possible in a day.
Anyway only thing that worries me about the runtime is that it’s Batman. That’s a long time to sit with a film with that kind of mood and tone. It’s easier to breeze through let’s say Endgame at 3hours because while it gets heavy. Their is a lot of humor and fun to break it up and keep things moving along. 3Hours of Moody angst could get hard to watch even if it’s great. I trust Reeves though and I’m sure it will be fine. Penguin looked fun in the trailers, so I’m sure he will find ways to break it up a bit.