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.
Though she is believed to have been infertile, Callas was rumored to have had a love child with Onassis, the shipping tycoon and a Greek compatriot. The son was born in 1960, the rumor has it, and died hours later. Other rumors state that she had at least one abortion while she was with Onassis.