I will try to answer as best I can, I have visited Germany a few times but I am not familiar with that operation so I can only speculate.Sometimes I am confused by the videos coming out of europe. I am not even sure what they are doing.
For instance, why are they strip havesting then stooking the straw afterwards?
And the hay raking, why not just use a windrower and save an operation or does it need to be spread cut first to dry better? Is it humid in Europe? Here in Canada you can cut hay with a swather and bale it 5 days later without even turning it.
Is the land so close together that the grain hauler has time to drive the tractor and wagon all the way back to the yard? Why is grain just dumped onto a warehouse floor instead of into a bin? Does it need extra drying?