Whether it’s a Marvel Cinematic Universe blockbuster or a smaller indie like Baby Driver, movie magic really is magical, isn’t it?
In that scene, Gunn and Chris Pratt had shot a sequence with everyone on the set, but they eventually came up with an idea for the funeral that they liked even more, and as such, they went back and inserted Pratt into the scene using green screen.
If this is true, then it sounds like a similar technique used earlier this year by James Gunn on the set of Guardians of the Galaxy Vol. 2.
Specifically, at the very end of Guardians when Peter Quill gives a eulogy for a dearly-departed ally — which we won’t spoil here if you haven’t seen it.