Thread:BananaClownMan/@comment-25999669-20190504194612/@comment-25041817-20190504230850

Russo confirmed in interview that timeline can't be changed back once altered. Banner and Ancient One also say the same in the movie. Rogers only puts the Stones back because of the deal that Banner and the Ancient One made: return the Stones to avoid giving trouble to the different timelines.

No matter what happened at the end if the film, the Orb time will always involve Quill being knocked out, waking up later and fighting Korath for the stone, but now the difference is that Thanos and GAMRIE will playou no part on his life after that point, because if Thanos jumping to the Time Heist timeline and being killed by Iron Man.

Also, as mentioned before, the Russo Brothers confirmed that Ronan culled Drax's planet for Thanos. It is also referenced on Ronan's page, which is how I found out about it before I listened to the commentary myself.