From talk + -fest.
talkfest (plural talkfests)
- (informal) A session of enthusiastic discussion or gossip.
2024 January 19, Larry Elliott, John Collingridge, “Casting their shadow: how Trump, Putin and AI dominated talk at Davos”, in The Guardian[1], →ISSN:The regular January talkfest high in the Swiss Alps attracted an impressive list of world leaders of all political persuasions.