Well, this isn't just Sonoma, but this is where most people seem to be. I am somewhat stunned that if you Facetime to a Mac that is sleeping, the Mac will wake up long enough to allow you to accept the call,and then, boom, it goes dark and hangs up. Not sure what Apple was thinking when they designed that. If you were trying to Facetime to a Mac that was sleeping, you might expect it to just refuse to connect at all, if not wake the system up entirely.