I'd like to be able to have a shelly wall dimmer control a Shelly G40 vintage bulb via either BT or WiFi, in addition or any local load on the dimmer, preferably without going via the cloud for latency and robustness reasons.
Is there a way to have the two devices talk directly to each other? I know I can do it via home assistant automation and maybe via scripts and MQTT.
Ideally I'd like it work work over BT so that even if the WiFi is down the lights still work?