What's that like? Is there a lot of sharing notes, like "we built this, but it's got to fit into this"?

Exactly. Because sometimes things are sticking through, like, "Hey, I'm seeing your beams going into my subterranean." So there's a lot of feedback going back and forth. Also doors need to connect and everything needs to fit together. So communication is really important because we don't want things to be misplaced.