I'm intrigued. Could you please elaborate on your setup, what Apple TV provides in this mix and how it is used? Is the Apple TV always powered on (24x7)?

There isn't much to say. The AppleTV is like any other computer. I installed Tailscale, set it as an exit node and turned on subnet routing.

The AppleTV is always powered on, but it only uses 0.3 watts while idle.