I ordered for us the doors for the Technikraum & "Elterntrakt". Both areas are ventilation-wise autonomous, so they have as much supply air as exhaust air and therefore do not require transfer vents.
No, the parent wing consists of a bedroom, dressing room, bathroom with supply air in the bedroom and exhaust air in the bathroom, door to the hallway is in the dressing room. The technical room also has a workshop attached, supply air there, technical room exhaust air.