Immergas Vitrix Superior Central heating integration in HA

All,
Did somebody get an Immergas Vitrix Superior (Central heating) working with HA?
I understood the device is not using the OpenTherm (OT) standard communication protocol!
I currently have the (dumb) CAR V2 installed as thermostat but would like something more intelligent to work with HA.

Somebody ideas? Does Nest work?

IMG BUS is a bit improved Opentherm. But I have made some tests and common Opentherm communication was possible. When I will have some time, I will continue with research. I am trying to find some used CARv2 interface (new one is too expensive to buy it for research only) and analyze the communication…