CNN will know all about the “hearing aid device” to give Biden the answers - to questions CNN has most likely already “leaked” to the Biden team.
Trump will have to debate the moderator as well as Biden, since it’s CNN.
I half expect Biden to claim at the last minute that he cannot, in good conscience, sully the office of the president by debating a convicted felon. If it does come off, you just know Tapper and Bash will hammer Trump about all the phony charges that have been thrown at him.