I would cautiously suggest simply using an online image search. There are very different combinations, depending on the type of shop.
Some random examples:
- Deutsche Post + DHL + Postbank as a standalone “Postfiliale”: https://www.golocal.de/media/9451677319b5dfa6017d06f7b2d1dd8d/1500fitsq/81325bcf87ea395e.JPG
- Deutsche Post + Postbank (without DHL): https://www.moin.de/wp-content/uploads/sites/7/2022/02/Post-Filiale-Kiel-1.jpg
- Deutsche Post as a “pop-up store” in another store with an “Postbank” ATM in front: https://www.golocal.de/media/e358bc83dac2b857db8674ecd6e4ef4d/1500fitsq/ecdafa8fcdcbe9ef.JPG (including DHL services here)
- Deutsche Post + DHL in a kiosk store: https://www.simplegermany.com/wp-content/uploads/2020/10/German-Kiosk-with-postal-service.jpg
- Deutsche Post + DHL “Postshop” - this is a partner shop: https://images.tagesschau.de/image/ae57d462-af23-45e5-95c0-490c2ccc6221/AAABjcWu6C0/AAABkZLiamM/16x9-1920/postshop-100.jpg
- Only a Postbank office: Filiale Postbank, Hindenburgdamm, Lichterfelde, Steglitz-Zehlendorf, Berlin, Deutschland Stock Photo - Alamy
In most cases I could not determine whether the Deutsche Post here is operator or not. And as you can see, you would have to play a lot with the branding values. Deutsche Post;DHL;Postbank or Deutsche Post;DHL or Postbank … depends on the store and services.