When you look at it a bit different, you can install the Doorbird on one of the Homey’s in the same LAN, and just connect the two Pro’s using this app set (through a VPN):
https://community.homey.app/t/app-pro-homesh-controller-homesh-satellite-connect-homey-pro-2023-to-homey-pro-for-led-speaker-zwave-satellite-and-network-resource/70369
