In terms of fake news, I have read that Biden "quickly corrected himself" after the 120M gaffe but I can imagine he's got an IFB/staffer in his ear trying to keep his appearance damage to a minimum.
At any debate I want his ears checked!
Screwed that up - if he did correct it immediately FOX cut it off ... I mean nobody can be that far off. Except for maybe Biden’s correction and “immediately” may mean once his campaign could issue a statement.