Hello there I'm having issues with one specific friend, as neither of us can connect to each others parties or multiplayer games. Yes both are NAT types are opened and we both have opened the ports. The main problem is that I can connect to someone who lives with him who has a different xbox. So I don't know what the real problem is. It only won't let us join each other, we have to connect through another person. If someone could provide some insight it would be highly appreciated.