This won't change since the MacPro5,1 firmware effectively completely ignores the GC-TitanRidge at POST and the double boot is necessary to enable the card.
Change the title of the thread for something more appropriated for your workflow, like "Questions about MacPro5,1 + TitanRidge + Sequoia + Logic Pro" so people with similar workflows will see the thread and comment.
There are users here still working with MacPro5,1, audio and Sequoia, like
@basslik, but he is a Pro Tools user, maybe he can help you.
Anyway, there are several MacPro5,1 limitations after Monterey and maybe Sequoia + Logic won't work as good and stable as Logic Pro is with Monterey.