I tried to solve my wiring issue with Nuki support, but they refuse to assist - although e. g. @Juergen points to the official statement that the opener supports almost any electronically controlled door.
Enough of my frustration - here’s the issue:
Following the wiring proposal for “Generic Intercom > Analogue” I managed to get things working (buzzer opens, floor bell detected) except the door bell button at the main entrance 
In my desperation I even tried to connect bell detection in parallel (as pictured)
Maybe the issue is connected to the missing wiring between floor and main entrance…
My three wiring attempts of Opener Yellow/Green so far:
- between Violett of bell > Floor Bell detected
- between Blue of bell > Nothing detected
- parallel to Violett/Blue > Floor Bell detected
Previous posts either picture a different situation or do not offer a solution for my issue
Thanks for any advice. 