Apparently Evans spoiled Anthony Mackie's promotion through some very MCU theatrics, part of which had convinced Mackie that a new version of Endgame's script he hadn't read was going to kill off Sam Wilson. As you'll read in this anecdote recalled below, that couldn't have been further from the truth:

Anthony Mackie, in the upcoming Marvel superhero film Captain America: Brave New World, reveals how he got to know about his lead role of Captain America from Chris Evans.

Anthony Mackie initially thought he was getting killed off in Avengers: Endgame due to racial bias, until Chris Evans surprised him with the truth.

No one was more surprised than Anthony Mackie that he was the new Captain America – mainly because he thought his character Sam Wilson was going to die in Avengers: Endgame.

Sebastian Stan said in a recent interview that he misses working with his 'The Falcon and the Winter Soldier' co-star Anthony Mackie.

Anthony Mackie shared that he found out he'd be taking over Chris Evans' role as Captain America in the forthcoming installment, Captain America: Brave New World, from the Marvel star himself.