Are there any hardware (or any at all) limitations that would prevent hand tracking from working in Oculus Link through the Unity editor?
I've been using it for a month or two now, but a teammate of mine with a very similar machine/setup is unable to make it work. He's had zero issues using Link aside from hand tracking, and it's becoming very anti-productive trying to troubleshoot. Both of us are working on the same project, using the same headset firmware and the same oculus software version. I suspect the only actual difference is the cable being used. He's had no other issues using Unity + Link aside from this, so I'm curious if hand tracking (in Link or the Unity Editor) is somehow limited to only the official Oculus Link Cable or if there's a similar limitation that isn't mentioned in any tutorials.
Try doing the USB speedtest inside the oculus software on both computers, maybe he has a bad cable or is using usb 2.0? If both speed are comparable, maybe he has just forgotten to enable hand tracking on his quest?