@John-Nomikos-0
I found this info about DSP UARTs being available for use with external flight controllers starting in SDK 1.1.
https://docs.modalai.com/voxl2-external-flight-controller/#dsp-uarts-via-apps-proc
So I will try upgrading to SDK 1.1, connecting an external flight controller to DSP UART, and then connecting the gimbal to the UART on top of the 5G hat.
I wonder if it will work if my external FCU is on Ardupilot and I'm using mavlink_router instead of voxl-mavlink-server