So I have a new Apple TV in a customer's house and it's working with the original Apple IR codes but not exactly the same as the new touchpad remote.

Basically the biggest problem is that the ZDF app (German TV) doesn't allow scrolling with the IR codes. It only seems to work with the touchpad. I was able to somehow get left to skip 10seconds back by holding multiple buttons and fiddling around but then I lost it can't get it back. So there's definitely some buttons combos or holds that allow more advanced control but for the life of me I can't determine the specifics.