yeah, unfortunately the lutron bulb remote is a no go, they use a specific broadcast group id that the zigbee firmware isn't listening for, this is the exact reason the Ikea steering wheel remote won't work.
Many touchlink devices will switch to unicast messaging when they get a bind request from the hub, these devices can then be used in HE, those that don't support this generally can't be used.
I haven't dived into the touchlink cluster spec that much, but it appears that this observation of the device switching from multicast to unicast is arbitrarily up to the device manufacturer vs being a defined implementation standard...
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