He doesn't even look up at the irritated growl of words, eyes still on the blueprints he doesn't even need to look at any more because he's got it memorized. "If I was actually ignoring you, you'd know it." His voice isn't even colored in the annoyance it was seconds ago, more flat, and like it's an obvious stated fact.

Because there's little in the world as cold as Leonard when he actually freezes someone out. Which he isn't doing, currently. At least, not intentionally. It's just the way things are, always have been. Well. Close enough to always, at any rate.