Via comicbook.com Did we miss one of the MCU's biggest Easter eggs in Captain America: Civil War?
It looks like old-man cap that we saw at the end of Avengers: Endgame may have made a small blink-or-you'll-miss-it moment.
Now, you might be thinking..."oh come on...they REALLY thought of that back then?" This is Marvel, so YAH! Maybe.
Then again, it's not 100% confirmed. The writers just like the idea that the theory is out there. It's really your own conclusion to whether or not this theory is true .
Of course, with Cap making his choice to stay back in the past with Peggy raises more questions so check out this very funny video. Cap could have saved us all!!