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.
Focal and Multifocal Lung Disease Part 2. Pneumocystis jiroveci (formerly P. carinii) is an organism that was previously thought to be a protozoan but, on the basis of genetic studies, is currently considered to be a fungus. Pneumocystis pneumonia (PCP) typically occurs in patients who are immuno-compromised, most commonly those with HIV/AIDS.