@Freyaday does this affect UEFI POST or just the Windows loading part? :o
Since it says "OS Boot" specifically, I think it might just be Windows loading, actually. But I don't really know.
It's a brave new world once you go down that rabbit hole. But look at it this way, apple has a basic full fledged OS living in their efi, so anything is possible in that space really... Even networking...
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