First thing, running 2 macOS + Windows with one blade only is a bad idea with a MacPro6,1. To make it work reliably you gonna have to choose two.
Second thing, you don't need OCLP to run Monterey on a late-2013 Mac Pro, is natively supported. OCLP does not even support Mojave (Big Sur to Sonoma).
Second thing, you don't need OCLP to run Monterey on a late-2013 Mac Pro, is natively supported. OCLP does not even support Mojave (Big Sur to Sonoma).