One of the good things about working on Infinity War and Avengers: Endgame so closely is that the Russo Brothers already had a lot of the upcoming movie complete before they could even gauge fan reactions to the last movie.
If the Russo Brothers could go back in time, like Avengers: Endgame is rumored to do, “We wouldn’t shoot them back-to-back,” says Anthony Russo.
With that being said, the Russo Brothers would probably like to have a little bit more time to work on Avengers: Endgame.
The buildup for Avengers: Endgame has been big, just like it was for Infinity War, but it seems even bigger this time around.