Unstable routing causing open ended response times - previously reported.

Ahh...   Allow me to share an update!   After 3 hours in a "Direct Message" session with Xfinity support staff I have learned the following.  (1) Direct messaging is used by the support staff to provide an interim solution between email and texting, it slightly slower than texting but perhaps fasster than email.  (2) Xfinity staff may require a minute or two to respond or up to 20 minutes, and no feedback is available through the interface, creating the sensation of endless open-ended waits....  (3) Xfinity staff are the prisoners of adverse factors, which prevent them from exercising any training they may have had, and any common sense - they are process-bound entirely.  (4) The Xfinity staff are constrained by either scripted responses, or perhaps knowledge base, or maybe even an AI to guide them - this replaces their native intelligence.  (5) the Xfinity staff are more familiar with the issues arising from inexperienced civilians operating high tech customer-premise equipment - makes sense to me.  (6) my issue, which is related to router and link behaviors within the Xfinity wide-area-network are relatively unknown to the Xfinity first-line support staff, and their tools. (7) this combination of adverse factors has resulted (after 3 excruciating hours) in an Xfinity tech being scheduled to appear at my house tomorrow, perhaps knowing nothing of the reasons that they've been dispatched, nor any problem history.   If they read the direct message thread, they may realize their time and mine and Xfinity's money are wasted looking for a problem which exists in Londonderry New Hampshire, encountered by their router named "po-400-xar01.londonderry.nh.boston.comcast.net", by checking the my Coax in Magnolia Massachusetts is screwed firmly into the wall.   Stand by for further updates as this farce proceeds...