I tried turning the swing track off for t1 and then keeping it on just slightly for t2, but that didn’t get the desired result. And of course it wouldn’t, because this sort of phasing happens over bars and bars and bars. I really think maybe some micro timing where t2 is slightly off more and more as patterns go along could work. Then enter song mode and chain dozens of patterns together?
The only other idea I can think of requires a DAW. Record the loop at desired BPM, duplicate it out over minutes in your DAW, then play the same thing over it but turn the tempo up slightly. Alternatively, if you have two machines… Start them off midi synced, then unplug the midi cable and turn the tempo up on one of them? With this method you can never stop the sequence of course.
Still its a cool sounding patch. I may modify the note selection, create some more patterns with variations and call it an “original composition”