So, does anyone know how long it takes for a Tivo to disappear from the now playing list after it is gone from the network? I got a Roamio to replace an XL4. I set up the new box and transferred the shows that I wanted to keep. I turned off the XL4 and rebooted the Roamio and Mini. The XL4 is still in the list. When does it go away? Love the Roamio!