Arduino NANO BLE controlling an UNO?

" Is it possible?"
I recently made a head tracker for FPV drone flying using and Aduino Nano BLE. It attached to my DJI fpv goggles and it's connected to my transmitter via Bluetooth. It acts a s a trainer controller thru my transmitter and send the signal to a few servos that turn as i move my head.

My question is: Is it possible to do the same thing without the transmitter and replacing it with am UNO for the transmitter.

For example. Turning the nano moves a servo that's connected to the Arduino via Bluetooth.
Thanks

Yes, it is possible

Where are you stuck ?