RBRE960 Xfinity xFi Conflict

Similar problem here with Orbi 960.  My xFi modem actually restarts: yellow flashing, green flashing, white.  And of course during that time the Orbi loses the Internet.  Then it all comes back up and the process starts again in a few minutes or maybe a few hours.  However, once the "cycle" starts, I usually have to power off the Orbi and re-enable the xFi wifi to get my network back.

I was replacing an 850 system that had one Sat.  The 960 system has two Sats.  But I think I have experienced the issue with both 960 Sats powered off - wired or wireless backhaul doesn't seem to affect it, but maybe I need to experiment with that more..."after hours".

I put the 850 back online today to see if the problem is specific to the 960.  I should know after 24 hours if no issues with the 850.  But so far like night and day - I could not get the xFi / 960 to work this morning after a few power cycle attempts, yet the 850 came right up and no issues so far. 

I'm also concerned that this may have started a few weeks ago for me too and I just didn't catch it because it was not so severe and was happening in the middle of the night so I may not have noticed it every time.  If that's the case, then it may be that the 960 aggravates the issue so that it happens more often. 🤔  

I have not tried the xFi in Bridge mode yet and while some aspects of that are appealing, I'd rather not be forced into it.