

A little late to the party, but yes, I can confirm that Hue bulbs can be controlled directly over zigbee. You will need a zigbee radio if you haven’t already bought one (£20-ish).
They literally just appear like a zigbee device inside that integration.
You may need to reset them before they will pair.
I forget the pattern, but iirc it’s on 2s, off 8s, repeated until you see an acknowledgement flash.
Sometimes, you’ll get one that takes forever, then the next bunch will just hop right on.
I have several Hue hubs I still need to offload, as I sometimes buy the combo packs that include another hub.
I also found that the response time was a lot quicker over direct zigbee than farting around with Signiant/Philips’ API.
I don’t get why they are all cosplaying a seedy man from the 70s.