Connecting Peripherals in Simulation On Hardware

Hello, I’m running the Simulation on Hardware, following this documentation: Simulation on Hardware — Dev documentation. It allows me to run SITL on the Pixhawk CubeOrange. I have a companion computer that I want to connect to the Pixhawk on its Telem 1 port. The computer works fine when using the stable versions of the firmware, but in the simulation firmware pixhawk does not seem to recognize its connected. So do peripherals work in sitl on pixhawk? is there any params I need to change?