@David-TP So, what I found on the web was that the ATT BGW320 cannot be put into bridge mode. I will try your second suggestion. Thanks! I'll let you know how it goes.

Having AT&T fiber installed with a BGW 320 modem/router. Already have the Deco XE5300 working with Spectrum. Anything I need to know since the new AT&T modem is also a router? Should I turn off the...