There’s never really been a movie like Avengers: Endgame. That’s probably because there’s never been a movie franchise like the Marvel Cinematic Universe. With over 20 interconnected movies released over the span of 10 years, Endgame had enough opportunities to make tons of references and callbacks to a sprawling continuity of characters and plot twists. And while many significant lines of dialogue were pretty easy to spot like… there were still plenty of other fantastic callbacks that may have flown over your head. Here are some of the small details you might’ve missed in Avengers: Endgame.