How to measure duty cycle, transmit it and replicate it on another device

I’ve been looking for a solution for the last week or so
I want to measure the duty cycle of the seat heaters

And then transmit it wirelessly/radio RF to the steering wheel where another device would replicate it and/or perform adjustmens (like increase or decrease duty cycle)

So far I am left with: a hardware 433mhz transmitter/receiver that hopefully will be able to do it hardware. I don’t particularly like it because I have no control over it

Another solution (better?) would be to use a ESP8266 to read the duty cycle (would this work? Duty Cycle Sensor — ESPHome)

then connect to 2nd ESP8266 (in AP mode?), transmit it there (using KNX?) and the 2nd ESP8266 (or ESP32?) would replicate the PWM, not necessarily with the same frequency, but with similar (or intentionally modified) duty cycle

How does this sound?
What else could I do?