So I have successfully paired an Essentials bulb via Thread to a Nanoleaf Lines border router, and everything (including an OTBR instance) is in the same preferred network. Using an iPhone to try to put everything together, I added a HomeKit Bridge integration to my HA instance and successfully set it up. I also sent credentials to my phone via the companion app for good measure. Yet, if I try to add the Essentials bulb to a Matter ecosystem via the Nanoleaf app, I'm shown a pop up that says "Home hub required."
I already have the HomeKit bridge registered in the Apple Home app - what am I missing?