I recently signed up for Internet/TV and received 2 receivers. One is XG2V2-P and the other is XiD-P. I am unable to set up my soundbar with the XiD-p due to no optical port. I went to the Comcast store and the man said I cannot get another XG2V2-P receiver unless I have multiple TV's. Just wondering how to hook p the soundbar without it as my TV does not have HDMI (ARC ). Why am I not able to get another XG2V2-P ? Thank you.