Meta quest link in systray

it connects to the Quest automatically and provides an internet connection

??? It's the other way around. The headset connects to the router. But all routers do that. There's nothing special about it. You can change the behaviour in the headset's wifi settings, there is a toggle to "auto-connect".

Is there a way to have the Meta Quest Link application run in the Windows system tray automatically ?

The Link PC app does that already (or at least mine does) 🙂.

If you're talking about automatically running the Link dashboard on your PC, if you enable Developer Mode on your headset, there is a setting called "Link auto-connect" 🙂.

Pro tip: if you ever enable 2FA authentication on your headset (e.g. to set up developer mode), be sure to write down all the one-time recovery codes and keep them in a safe place. A lot of people get locked out of their headsets after losing their phone and having neglected to keep a copy of their recovery codes.