a long period of discussions, debates, or speeches
But in eschewing plot in favour of an endless stream of rants, his ideas implodeinto one big talkathon that becomes tedious and ultimately inarticulate.
Word origin
C20: a blend of talk and marathon
talkathon in American English
(ˈtɔkəˌθɑn)
US
noun
any prolonged period of talking; extended speech, debate, etc.