Last month in one of the Twitter Q&A that he does from time to time, James Gunn confirmed that Guardians of the Galaxy Vol. 3 would have to take into effect what happened in Avengers: Infinity War and Avengers 4. You’d think that would be enough for most people on the internet to believe that the movie would be set after Avengers 4, but the theories were still flying around that somehow Guardians 3 would be set before Infinity War.
Today James Gunn again confirmed on Twitter that the third Guardians movie is indeed set after Avengers 4:
It will be after.
— James Gunn (@JamesGunn) June 18, 2018
Even though this is the second time he’s confirmed that it’s set after Avengers 4, I’m sure people will still continue to claim it won’t be until people see what happens in Avengers 4 next May.