Vincent:
Vincent's day starts in the mornign with Jules and ends in the evening with Mia, she tells her joke, he sends his kiss into the air when she leavesm fade to credits. A great ending.
Vicnent dying here would have interrupted it all and wouldn't have worked.
So he does not go to the boxing palace with Marvin and he does not visit Butch's home the other day.
Butch:
has his complete story happening, including Vincent's death. His day ends when he takes off on the chopper with Fabienne.