"J- I don't know. The whole." He starts to wave a hand to indicate the entire thing until remembering that Steve can't really see it and he drops it into his lap. There's a moment where he almost says he's sorry for saying he was sorry, but he manages to catch himself before opening that can of redundancy.

Bruce leans back in his chair, more than a little surprised that his absence has been noticed at all, and by the captain of all people.. "It's not really private, not th-" Not that his privacy's much of an issue these days - surveillance details and tranq guns and just being here in the first place put a nix on that. Especially on top of Stark being-- Well. Himself. "It's just. Time-consuming stuff, so between that and sleeping things off after... Whenever It's needed just kind of, uh. Puts me out for a while." A small, self-deprecating smile tugs at his lips and a quiet huff of not-laughter escapes him. "Besides, I've, you know. Not that good at the whole, er. People. Thing. Never have been. So."