The ultimate impact includes people the listeners talk to about the interview, and people they in turn talk to, as well.
I’m sure there are people who calculate and estimate this as a profession. It has to be an incredible advantage for MAGA that both of them have this ability. And, it has to be a serious problem for the Dems that neither Harris or Walz can.
I made a post about this after RFK endorsed Trump. RFK was already on the podcast grind and primed the engine for Trump to get on them.