Hello
I have the exact same issue it seems it’s a Windows problem more than a Presonus problem. so far, the material that I have read talks about such interconnections only be possible with ADAT I/Os if the differences have them.
Believe me, I haven’t tried any of this yet, but I am quite surprised because in the earlier years I have been successfully using multiple sound cards, PCI sound cards in one computer. so I assumed that with advanced technologies that aspect should have been a no-brainer.
I can see that you haven’t received any response to your question.
However, I would be interested to know if you and your own have been able to find a solution and if so, how are you working around on this matter. Thank you so much