It'd not an off-the shelf solution as such, but I have a relay with an ESP32 that fires up the heating and it's directly controlled by HA. HA uses thermometers around the house - mostly ZigBee - to work out when to run it.
Given that Hive is ZigBee based and will continue to work locally, I wonder if it can be directly linked to HA?
I kind of wish that the rest of the band would hire a singer for a month or so to re-record the Lostprophet's catalogue. I'd like to listen to some of their music again without him getting royalties.