I watched the interview and honestly as a Trump supporter, it wasn't that great. But that's cause I've already heard most of this stuff. Of course I wasn't the audience for this, it was Rogan's audience and a good chunk of them believe the media telling them that Trump is HItler. So it was a home run from that POV. End result is this only helps Trump, gets him more exposure and Rogan having a normal conversation with him will resonate with a lot of centrist and even some Dem voters.
