I increasingly get the impression that they all don't really care at all. They're all individuals who share a common past and happen to be in a kind of financial endeavour again, but apart from sharing a stage a few nights each year, rubbing shoulders and acting like it's the most rock n roll, punk as fuck thing to do, they go seperate ways, so I'd be surprised they keep each other in the loop with everything they do, exceptions would be things like Duff recording and playing with Iggy, so he invites Slash over for some good punk vibes.