I think the format of 3 hours just invites too many opportunities to try to trap or trip her up with something that could be a disastrous sound bite going into the last week of the election. Rogan's not a journalist, but you can almost guarantee that he will receive a lot of "help" in the prep work for Kamala's topics if she did it, just like I'm sure Brett Baier did with Fox News. Knowing the people I know who listen to Rogan, they would never vote for a Dem or woman for President, and I think that most of that audience is just content with their echo chamber. I just don't think there are a decent amount of people listening that haven't already thrown in with Trump or simply prefer who they think he is.
I watched about 2 hours of the Trump one, and there was nothing new there. They rehashed old subjects for the most part, talked about UFC for a while, and really didn't delve into any specifics on policy. Rogan didn't press him hard on the stupidity of his economic or healthcare plans, social security, Medicare, etc etc. In several instances Trump would state something generic and unsubstantiated, Joe would try a follow up, Trump restates his initial empty statements, and then they would move on. It felt like such a softball setup for everything, and simply an extension of Trump's platform to talk aimlessly to the masses. He talked about whales having psychological issues due to windmills at one point, which was probably the craziest thing he said, and Joe just kind of laughed it off as if it were a joke and changed the subject. I thought he was being serious the way he delivered it, but it doesn't really matter. If it were to be a story, he would just call it a joke that people didn't understand and keep moving along. I don't think Rogan would be anywhere near as passive with Kamala.