My buddy and I play GRAW 2 about once a week, 2 different locations. For some reason, we are always unable to do the private chat feature. I'll send in for a chat, he'll accept, and then it just sits there. Nothing happens. I'm not having any problems with the normal chat in the rooms. A quick search on google shows that NAT is usually the culprit, but both our NATs say that they're open. Any thoughts?