Avengers: Endgame directors Joe and Anthony Russo have discussed how they use footage that doesn't make it into the final cut of their films in their trailers as to "preserve the surprise of the narrative." Via ComingSoon.net, the Russo brothers were recently interviewed by Empire Magazine and talked about how important it was to them that they "keep the film's marketing department from spoiling the surprises." “We talked about all scales of marketing,” said Joe Russo.