This market will be very generous to the candidates and resolve YES only if I, despite carefully analysing an audio or video recording, cannot figure out what the candidate wanted to say.

I am not aware of any incoherent rambling from Biden or Trump in the past that would have resolved it yes. For example, neither of the following would have counted:
https://twitter.com/Breaking911/status/1754722213364720001
https://www.youtube.com/watch?v=9ys5VWI29R8