Earlier quoted context omitted.
Oral exams are still common in Germany and many European countries in case of smaller courses taken by 20-30 students in a semester, and sometimes even in larger courses, and the task of examining is then split among multiple professors and lecturers. In Hungary it's a pipeline. You go in a room, you pick a piece of paper out of a hat, which gives you some task or topic to prepare for. Then you sit down at a desk (th…
I'm not familiar with the German universiry system, but I think a 1 hour, 2 professors (or one professor and one PhD student) would be impossible to scale. A class of about 100 students could take an entire month! (or better, 2-months of professor-hours!)
I was the PhD student in the room in dozens of these exams, and I toke some of them myself. But that was for classes with a bit less than 40 to maybe 60-80 students. The load for the larger ones was shared among professors, if I remember correctly. But it was certainly the case that a single professor spent 1-2 days doing nothing else but these exams.
And it was 1 professor and 1 PhD students, and those don't count. They essentially grow on trees and are always available, if you need some.