Siemens Connected Home - how to integrate to HA?

Hello, I wasn’t able to find a single mention of how to integrate smart radiator heads connected via zigbee in the “siemens connected home” system. There is no integration or HACS on it… I tryed some general zigbee integrations, but it doesn’t work.
Does anyone have any information or experience with this please?
Do you know, if I buy HA compatible zigbee gateway if it connects siements smart radiator heads?
thanks for any advice

Hi. I am in the same situation and i also would like to integrate the Siemens connected home into home assistant
Is there anybody who can help please?