I listened to his radio show a little bit back in the 90's. I don't remember him being on Airwolf, but I probably wasn't aware of who he was at that time.
I recall once I was listening to his radio show and some shrill woman called in to read him the riot act over something. He let he go on and on without saying anything in response. After a couple minutes he finally cut her off and moved on. I think he must have got up to use the restroom or get coffee knowing she wouldn't shut up or actually ask him to respond.