Spirit System

Geolink connected to Spirit BE via sat port
SPM4649T to Spirit via Jeti integration cable
How to connect Hobbywing telemetry to Spirit?
P.S. Spirit pro is too large to use on my T-rex 450

This is unfortunately not possible.
You can use either GeoLink or HobbyWing ESC telemetry.

Spirit Pro can fit at T-Rex 450, but it is not ideal. But still can work without any issue.