"Is it really considered kidnapping if it's a dinosaur?"
He was joking. Maybe.
Tony hadn't given him an outright no over the suggestion of churros, so maybe, he wasn't in a huge hurry to get back to the hotel. It also implied that he wasn't in a huge hurry to get away from Steve, so he'd try to take that as a good sign as well. "So.. this Peter. Does he know who we are? I was sort of under the impression he was avoiding the subject of his identity, judging from his post on the Network.."
Not a question that directly related to Tony, but Steve still sort of wanted to know where he stood with other-Peter and if he needed to act oblivious to the existence of Spiderman. That, and he was fully aware that he was walking a thin line here. Better start with the safe-ish questions before he tripped over the boundary line.