Two Air Unit with One Remote Unit

Hi everyone
I looked through the past topics on the forum and couldn’t find a clear answer about the use multiple air unit with one remote(ground) unit.

I just want to use two air unit in different vehicle and will send data one vehicle to other.Data which is received from other , will forwarded to remote(ground) unit by own air unit.
Shortly I want to use air unit as a relay.Is it possible or not with stable firmware of the herelink?
Can you give a information about the firmware capability or share a documentation about it?
Thanks for answers.