How to connect Raspberry pi cam to Pixhawk via Herelink receiver?

I have RaspberryPi 3 connected to Raspberry Pi cam, the raspberry pi (GPIO) pinout connected to the Pixhawk (Telem 2)... In addition I connected the HDMI output of the Raspberry Pi to the Herelink receiver. How to can I display the life-feed from the Pixhawk??? via /r/drones https://ift.tt/3jvW0UA