I think at least. I was in a private chat playing dark souls 2 with the guy, then all of a sudden I start hearing really heavy breathing, and a noise that sounded like he had his mic in his mouth. His dog starts barking and in the background I hear someone say "Call 911, he's having a seizure" and now it's silent.
Hope he didn't die or something. Anyway, just thought i'd let you guys know, and yeah.
UPDATE: He apparently passed out from dehydration, and he's okay now.