Is it possible to connect an Arduino directly to the HMD? (Meta Quest Pro)

Hi everyone.

I'm planning to use a Meta HMD, probably the Quest Pro, together with an Arduino Uno. The Quest will run a VR application made in Unity and the Arduino will control custom hardware used for input / output. 

Normally, I would just connect the Arduino to the PC running the Unity application via USB, but since the Quest Pro will run the application directly on the HMD, that won't be possible.

I was wondering if there was any way to establish a serial (or some other type of) connection between the Arduino and the HMD. Wireless connections (e.g. via Wi-Fi or Bluetooth) are pretty much off the table, because latency should be kept as low as possible (about ~10ms max).

Has anyone done this before? Any help would be much appreciated!

Thanks in advance!

Max