"I am able to connect them, either as a duplicate or extension, but no matter what I can not use any input fomr SLS."
I have already gone through those steps. Devices are connected via Miracast, I can change how I want to cast desktops. This part is not the problem. The problem is the lack of input from SLS. I can not use any input from it, and as far as I understand that should be possible (I've seen it on EVERY single video on the topic so far).
No, I do not want to use my SLS by connecting it via USB. It would be great, I really do not understand why M$ is not providing such feature, but I am trying to connect the via Miracast (which I already did, but input does not work).
So the problem is not with setting up connection in general, I am not looking for USB solution (M$, that would be so much better, come on). The problem is that when my dPC casts to my SLS via Miracast I can not use input from SLS in any shape or form.
Please help. It is extremely frustrating.