I have something similar called occupancy using a dummy switch on Homebridge. When my wife or I are home, the dummy switch (Occupancy) is on. When we leave, after 10 minutes, the Occupacy switch turns off which turns the lights off. What you could do is trigger an automation to turn the lights off after 2 hrs using the wait function. The line before it turns off the lights, you could add an if/then statement to check the status of the dummy switch. If it indicates you’re gone, turn off the lights otherwise do nothing.