Need help with O.D.

[Gap Integrity]

I'm new to Online dynasty, I was wondering if it were possible to play in an O.D. with a friend, and my friends roomate join the dynasty and use his roomates console?? How would you go about this? Does the 2nd player on the console have to create an xbox live account to use on his friends console? Thanks for any help.

If this is possible, I as wondering if they would be able to play head to head in a dynasty match using the same console.

[PENAPENA]

Every Online dynasty user must have an Xbox Live Gamertag / PSN account and have an active EA online pass to play.

[Gap Integrity]

ok, so it's probably not possible then. Maybe one guy could sign in when they play each other, then just let the other guy play the game against him.

So can two guys with separate gamertags, use the same console and play in the same online dynasty? I would think as long as one guy is logged in, the other could just play their head to head game as the other team. Just looking for clarification on this.