Herelink pixhawk v5+ px4 QGC

Hello

Setup: I have Herelink air unit connected to the pixhawk v5+ on TELEM1. Voltage to the air unit is 6V. Cables check and properly connected. Herelink is paired
Herelink firmware: BRU01210730 AAU01210729

Issue: waiting for vehicle connection on the Herelink ground unit.

Steps undertaken: Voltage increased to 12V
MAV_2_CONFIG= TELEM1
SER_TEL1_BAUD = 57600 / 115200

Could anyone help me why there is not connection between the pixhawk and herelink. Am I missing something?

Regards,

Default baud for Herelink should be 57600.
Can you try Ardupilot to see if it works there?