Cloudflared ztna tunnel for Remote Desktop Gateway

Has anyone setup the Cloudflared Tunnel service on their connectionbroker/gateway? Documentation all seems to be for rdp/3389 instead of rdg/443. Can anyone point me in a good direction?

Thank You
Dave

To Clarify more, I dont want users going to a specific RDSH, but instead use the load balancing feature of the ConnectionBroker/RDG