Win10 on NVMe and Linux on sata SSD possible? Yes, ...but like this?

Ok so the problem is the first thing you want doesn’t work with the second thing you want. Or at least I don’t know for such a thing to exist.

You can either install Windows on one drive and Linux on another and at every bootup to switch from which drive you want to boot.

Or you can install Windows and Linux on the same drive and use the Linux bootloader ( GRUB) to boot in to one of them.