Steve and Natasha discussing the Red Skull's plane during the 1945 mission.
The central argument against an is the runtime. The theatrical version is already a marathon. Adding 45 minutes would push it toward Zack Snyder’s Justice League (4 hours) territory. However, Endgame has a unique structure: a mournful first act, a nostalgic time-heist middle, and a chaotic war finale. avengers endgame extended version
"Natasha... I know you're not here. But thank you. For holding the rope." Steve and Natasha discussing the Red Skull's plane