The HPNA light is only on if a device is using that connection, usually a STB connected via coax (can be over twisted pair in rare situations like apartments). It sounds like your setup uses ethernet which would not turn on the HPNA light.
The previous scene is an excerpt from Brain on Fire: My Month of Madness, and just one of many hallucinations Susannah Cahalan experienced in 2009 during her month-long hospital stay, in which she was diagnosed with a rare neurological autoimmune disease, known as anti-NMDA receptor encephalitis.
As lead singer Maynard James Keenan explains on commentary on aMOTION, his mother Judith Marie suffered a stroke in 1976 that left her partially paralyzed and wheelchair-bound. The length of time between her paralysis and her death was 27 years, or approximately 10,000 days.