Homematic IP - RaspberryMatic in HA - HmIP-HAP as only Gateway

Hello,
I currently was using HmIP-HAP with the HmIP Cloud. Worked fine untill I added some automation and scenes. Now i get blocked every time choosing a scene. So time to get rid of the cloud-solution.

If I use the RaspberryMatic in HA is it possible to use the current HmIP-HAP as only Gateway to the HmIP network? Or do i still need some USB-Adapter (which is currently sold out)?

Thanks

Update: Just recognized, that the HmIP-RFUSB would work (guess this would be the cheapest and most easy alternative, if HmIP-HAP as only Gateway will not work?

Hey have you found if this is possible?

Running in the same situation, I have a wired HAP and a raspberry running HA and I’m wondering if I can switch as I also got blocked.