Eye Tracking with Meta Quest Link

Hello everyone!
I am trying to trigger eye tracking via Unity directly in the Unity Editor with Meta Quest Pro. When I build an apk, eye tracking works. But it doesn't work via Meta Quest Link. I have read repeatedly over the last few weeks that there have been problems with Quest Link. I wanted to ask if anyone has recently been able to implement a project in which eye tracking worked via Meta Quest Link and what tools were used.

I have already read that ALVR via SteamVR is an option for transferring eye-tracking data, but I had problems with the packages. (My understanding is that you then need the SteamVR package and XR Interaction Toolkit instead of the Meta All-In-One SDK).

As a side topic, another question would be whether it is currently normal for passthrough transmission on the Quest Pro to be very slow with the current Quest Link version, but to work normally with the Quest 3.

My preference would actually be to do everything with the Meta Quest Link connection and the Meta Quest All-In-One SDK. However, if passthrough and eye tracking don't work via Quest Link, a solution with SteamVR may be necessary. 

Thank you for taking the time to read this. I would appreciate any tips.