Hawkeye gripes to his daughter that Ant-Man wasn't even at the Battle of New York while they're watching the musical, and he's right. Ant-Man wasn't there — at least not originally. But in Avengers: Endgame, Ant-Man joins Iron Man, Captain America, and the Hulk on the time heist to retrieve the Infinity Stones from the past. As a result, Scott Lang does get to witness the Battle of New York firsthand, he just happens to do so from an alternate timeline.