Good to see nothing really changed. The smile that tugged at Tony's lips was almost genuinely gleeful at that little tableau that was every inch Agent Coulson, whatever dimension Tony had just strolled into. He couldn't let it get out of hand, though, or Coulson might think Tony was actually glad to see him and not his frankly violently charmless personal presentation, and he really didn't need the encouragement. The other Tony didn't need the headache, and Tony had to look out for himself.
"Were you waiting long?" he didn't answer, turning a little apologetically to the stalled engine and the low-budget version of himself that they must have been putting up with for forty years. It was okay, he made it, he was here now to make them all feel comfortable. "This poor girl wasn't ready for all of the action. You sure you warmed her up?" he said, gravitating back toward the machine then stalling himself, torn between getting his hands all over it and buying his ticket home, and the chance to explore a whole new dimension. This couldn't have been all it had to offer, and it didn't seem like such a bad place. A little detour couldn't hurt, right?