All I really noticed was Tony shielding himself like Cap using a door or something from the blast, and how the kid and Tony talked about his stealth suit like the one he uses in the comics at the moment. Other than that...no. Also, where the heck was Ben Kingsley's Captain America shield tattoo like in the trailers?
The tattoo is there. They just never show it close up. Overall, this film is lacking any real MCU easter eggs. Tony and the kid explicitly talk about New York at various points, and Jarvis says he gets some information from a SHIELD database, but that is about it.
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