DT and DN seem to behave like the Octatrack - they start the new pattern at the beginning, not continuing from the same position you were at. The control in the pages screen only determines how quickly they change. So if you have it at PAT it will wait til end of pattern and if you have it on 2 it will wait till end of 2 steps. But it will start the new pattern at the beginning. This means you can easily end up with weird phrasing doing a 4 bar loop and then a 4 step loop unless you very carefully count your steps.
With Rytm and A4, if you are at step 3 on pattern A and you direct jump to B, you go immediately to step 3 in pattern B and continue from there. It’s very cool - you can jump back and forth between patterns with zero quantisation and maintain your phrasing.