Apologies if this was posted before, but I don't see it. I just found this podcast called "Rivals" about famous fights and feuds in music. Of course they have one about Brian and Mike. I hadn't had a chance to hear more than the first few minutes but wanted to post it while I'm thinking about it:
https://www.stitcher.com/podcast/how-stuff-works/rivals-2It's from March, so scroll down a little to find it.