https://en.wikipedia.org/wiki/Private_banking
You have a specific account manager, who you know, and is in communication with you about that Jet purchase. Yes, it probably is a wire, but maybe to an escrow, depending.
As I needed to buy a car, I informed my account manager that I would buy one, gave her the bank account information of the car dealer and told her that if everything is in order, I would call and ask her to perform an "instant" money transfer.
Just went to the car dealer, looked at the car, call my account manager, 30 minutes later the money was available on the account of the car dealer and I was ready to go.
For the day-to-day stuff, we use a pure online bank, but I am happy to pay the higher fees of a Sparkasse for such cases where trust is needed.
I bought a car last year and just paid for it using my chip-and-pin debit card, my bank told me that they can identify accounts for car dealers and don't question large payments to them.