Orbi AX 6000 and AT&T fiber gateway issue

You may be more likely to get an informed response by posting in the Netgear forum devoted to the WiFi6 (AX) product:

https://community.netgear.com/t5/Orbi-AX/bd-p/en-home-orbi-ax 

Not having an AX product, I can only hazard a guess, but it is hard to imagine how connecting a WiFi Access Point (Orbi or any other brand) to an internet gateway would disrupt the TV signal.  I also note that people with AT&T ISP service seem to post a lot of problems on this forum, so there must be something about the "AT&T Gateway" that is different from typical cable modem systems.

You can use the IP pass thru if you want to use the Orbi in router mode.

https://www.f0il.com/how-to-arris-bgw210-700-modem-router-with-netgear-xr500-router/
https://community.netgear.com/t5/Orbi/How-do-I-setup-bridge-mode-in-the-ARRIS-BGW210-700/m-p/1875994/highlight/true#M84982

If you configure AP mode on the RBR, then IP pass thru isn't needed. 

https://kb.netgear.com/31218/How-do-I-configure-my-Orbi-router-to-act-as-an-access-point and https://www.youtube.com/watch?v=H7LOcJ8GdDo&app=desktop

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Spezaled wrote:
I recently purchased the Orbi with WIFI 6 and planned on using them in AP mode to extend my U-verse Fiber gateway modem signal. Got the WiFi set up just fine but now my U-verse TV signal locks up after 10 seconds and then loses signal altogether. Has anyone else had this issue and is there an easy solution? I know there’s the IP pass through but I’m uncertain on how to properly set it up. FYI, I have many Ethernet cables current connected to my gateway. I’d hate to return these new units.

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