Many of us have wondered what exactly happened in Budapest that Barton and Natasha keep talking about in these movies. It was first brought up in The Avengers and then again in Avengers: Endgame. Since Black Widow is a prequel and said to explore Natasha’s past, we all wondered if that included Budapest. Well, we finally have confirmation at SDCC that, yes, Budapest will be shown in Black Widow.
While this wasn’t specified at the panel, this would imply that we’ll see Jeremy Renner show up as Hawkeye during that mission. Possibly as a short cameo with a minimal role.