I have 2 xbox ones in my house.  My wife and I both have valid Xbox live account, and never had any issue with playing multiplay games using 2 xbox in same time.  Obvisouly each Xbox is connected in same ethernet connection with same router.

I was trying to play just online friendlies (not a FUT friendly) with my wife(not a kick off mode using 1 xbox).  We can both invite each other to online friendlies and saw invitation message.  But the problem is, we cannot be connected in same session.  On the team selection page, my wife and I are in each own session.

What am I missing? Because it shouldnt be that hard to play online.  Additional question, how many guest can I add per each account in online friendlies game session.  I just checked 2 more additional guests can be added, but wanna know what is Max. number of guests to be added.