A quick moment in the middle of the the perilous hyperspace travel we saw Rocket Raccoon, Yondu, and Kraglin engaging in during Guardians of the Galaxy Vol. 2, we observed Stan Lee being rudely interrupted as he’s recounting every single cameo that he’s had since 2008’s Iron Man.
At the point in the late comic book legend’s story, he’s gotten to the part where he played a FedEx driver in 2016’s Captain America: Civil War; which means that those impatient Watchers have roughly at least nine more stories to sit through until they get to his final appearance in Avengers: Endgame… give or take his appearances in non-MCU canon films like X-Men: Apocalypse.