For me, about once a week it's

"hey siri?"

(no response, no icon),

"hey siri?"

(no response, no icon),

"hey siri?" (louder)

(no response, no icon),

"hey siri?" (louder and slower)

(no response, no icon),

reboot iphone 13 pro

"hey siri?"

works

“Did you mean ‘bathroom LED’ or ‘bathroom’?”

Because god help you if your device names are similar to your room names…

I’ve taken to naming my lights things like Greg, The Beacons, etc.

And I added scenes so I can say “Gondor calls for aid” and the beacons will light.