About herelink's setting

I have a drone with a remote control and Airunit is one radio channel. And I have two Airunits connected to each other (master-slave type) for transmitting a video stream over ETH and controlling the video head. How can they be configured so that they work at the same level and do not extinguish each other?

Two Airunites are connected according to the instructions.
This is done to transmit video via ETH from a video camera to a land laptop. Separate from other radio channels, this radio channel works great and transmits both the picture and video camera control signals.
There is a drone with the Herelink system installed. Works great and flies on its own radio channel.
Now we install a video camera on this drone. And we install one of the components of the video camera kit to transmit the video stream on board the copter. Now the copter has two Herelink systems: one for controlling the drone, the second for transmitting video to a ground laptop.
Separately, both systems work great. But when turned on at the same time, control of the drone disappears and the video image disappears.
I turn off the video transmission system. Communication with the drone is restored.
How can the frequencies on these systems be separated so that the video is transmitted and the control of the drone is stable?