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.
The Coroner maintained that Sangouthai 'went to the hospital for the infected arm, but the disease spreads quickly and often becomes life threatening.'. Sangouthai appeared with Lamar and Khloe Kardashian, 30, on their reality show Khloe & Lamar for two seasons from 2011 to 2012. He died at a hospital in Los Angeles.