Intermittent internet and television service interruption.

I have been experiencing intermittent internet and television service interruptions for the past several weeks.

These interruptions last anywhere from 5 seconds to 1 hour, and present as nearly 100% packet loss and garbled freeze frames from the cable box.

I experienced this a 3 years ago when I had business internet from Comcast. It was explained to me by the regional support agent (whose name and number I have lost) that was sent out after 3  regular tech visits that this is due to interference on the cable line causing the modem's upstream power to peak and trigger the safety shutoff. For the record when this happens modem upstream power is peaking at ~56 dBmV.

The cable line from the pole to my house is only 3 years old.  This occurs with the Xfinity Gateway whether it is in bridge mode or not.

After dealing with the useless Xfinity Assistant chatbot for the past several weeks I come here as a last ditch effort to actually be able to talk to a human being at Xfinity about this.