You can use the Homey app home-kitty. Make a virtual device in homey (on/off) with 2 flows dimm lights and brighter lights
In siri shortcuts you can make a “home automation” (device independent, for the homekit surrounding): when apple tv paused set virtual device on and when apple tv plays set virtual device off.
Homey gets via home-kitty the state of the virtual device and play the flow.
