DMX input from a wall panel and other control

Im planning to get an ESP32-based controller (probably a QuinLED Dig Quad and have many ways of controlling the colour. One will be a remote (which will get lost no doubt!) and Id like a backup of a nice wall panel, something like this one:

DMX Wall Mounted LED Controller RGB 100-240V 4 Zone | UltraLEDs

Im lucky enough thats its part of a renovation project so can put as much wiring in as I want! I would plan to run the DMX cable from the wall panel to the QuinLED controller.

Just checking that such a thing is possible?

The other question I have is that if the WLED controller is taking input from the wall panel from DMX and I then chose to change something with the App or a remote control, will it change the lights or does WLED just do what the DMX input asks of it?