I recently purchased two units of Bosch Room Thermostat II and successfully added them to the network via ZHA.
However, I cannot find a way to bind the the Room Thermostat to my Bosch Radiator Thermostat 2 in order to be able to control each other.
Do i really need to setup automations for this or is there another, more convenient way?
Note, that my Zigbee devices are solely ZHA managed, no Bosch Smart Home Controller is involved
Update: i could not come up with the desired solution (yet) so i ended up setting up blueprinted automations that synchronize the state and the temperature attribute of the climate entities upon relevant state changes. It works. Somehow. At least as long HA is running