Clint gave Wanda a whole 3 minute motivational speech in Age Of UltronI don’t know bout that..... Yea Clint was the one that rescued her under Tony’s house arrest.... but that was under Steve’s orders as due to the situation.... he couldn’t really just show up like that.
You mentioned Civil War
Then there's the scene in Endgame where they talk about missing Widow/Vision. Only 3 scenes but there's a clear established rapport and semblance of a father figure in Clint
Cap had one interaction with that bytch in Civil War