Well, that was -- Clint paused in the doorway of the workroom (and really, didn't even get caught up on the bigger on the inside thing - he'd seen Dr. Strange's digs a billion times) unsure if it was really his place to walk in on something that was private and nothing to do with him at all.
Eventually though, he had to make a decision. He couldn't just stand around with one toe in the water and call himself any kind of friend, could he? Particularly not when Jamie had been a good one, himself -- going out of his way to fix his hearing aids and all. He glanced down at Lucky who was behaving for once and offer a bit of a head tilt which got the dog to sit and stay in the doorway.
And then he knocked before bustling his way in. "I let myself in," he announced, like maybe he just hadn't been there to witness something that Jamie may or may not want to talk about.