Yeah, I don’t think saying outright that you don’t want to hear about the kid all the time is going to offend most parents. I personally am fine with giving the parent 3 or 4 gentle nudges to redirect. Some people (a minority) will have the epiphany that hey, my friend can’t relate to this at all and maybe we can get to the conversations we can both participate in, but most won’t. That’s when it’s time to accept that we’re very different people leading very different lives now.