Will using bridge mode to the aftermarket router effect the connected landlines to the gateway and Xfinity cable TV (they have there own boxes that are connected outside)? Your TV only goes through ...
I have been using an Xfinity Gigabit Extra internet plan successfully with my current config: Netgear CAX80 Gateway/Cat8 cable from 2.5 multi gb port connected to 2020 Mac Mini M1 10 Gb ethernet port.
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