Beats By CoRD
Tommy Fresh
One of you need to lower your NAT. Since CBJ doesnt have access to the router he uses, its gotta be on your end. Just Youtube "[name/model of your router] lower NAT xbox live" or something like that and it'll show you how to do it. If neither of you are able to do that, I don't see a way you two can play your series.
I don't have access to my router either.