

Install Windows, but leave drive open or a partial space on windows drive. When you install Linux, don’t let it install the EFI boot into the Windows EFI boot partition. Instead have the partition manager build a new boot partition+root home etc. Grub will install on its own partition, OS prober should find the Windows drive too, and it will add a chainloader entry to grub. Set your machine to always boot from Linux grub, if you want windows you select it in grub and it hands boot over to windows boot. This way they are isolated and Windows never knows that Linux grub exists and will leave it alone.
Support is loose term on Windows. KDE and GS connect work excellent on Linux, KDE connect on Windows seems highly broken