A:AnswerYou will get better audio output connecting the Xbox One X directly to the HDMI input on the Soundbar. Use the ARC port to connect the Soundbar to the TV.
A:AnswerYes..there is a soundbar setting which u use to take care of any sync issues. Can manually adjust with soundbar controller. Initially I had this issue but once I reset my Spectrum modem and TV box the issue went away.
A:AnswerThe rear speakers of the N950 are not for sale. You can add though the SW-900S which is $99 but your system will be only 7.1.2 not 7.1.4. I have this setup. The cheaper SW-8500 ($69) is listed as supported but I have yet to confirm this.
A:AnswerDepending on your TV the soundbar will replace your TVs speakers so I only have the tv connected to the soundbar. All of my other components are connected to the TV.