Biden’s town hall was 2 hours and Trump’s town hall only one hour, IIRC.
A lot of Biden’s number could easily be people who watched both.
I would guess a sizable portion of Biteme watchers that night (me included) wanted to hear him answer questions about Hunter and China/Ukraine. Stupid us actually thought Stephanopanpopolopogous would ask him about it.
And yes .. I watched both.