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.
Prolia: Another wonder drug that wasn't. Prolia: Another wonder drug that wasn't. Monkeys developed tooth and jaw abscesses and two died of protozoal infections. Human subjects developed cervical, ovarian, pancreatic, gastric and thyroid cancers and breast cancer was the most common adverse event that led to discontinuation in trials.