Is pelvic floor and person’s flexibility connected?

Has anyone experienced considerable impact on their flexibility journey after “fixing” their pelvic floor? I’ve been working with a private flexibility coach for a few months and she has noticed that I can’t seem to engage my side glutes no matter what exercise I do. We tried many many exercises and I never feel them working it’s always either my quads thighs or something like law. I never feel it there where people normally feel. That’s why I struggle certain stretches for example pancake as well. She recommended me to see a pelvic floor specialist ( I already scheduled a meeting). But since it’s such a specific feedback and issue I’m wondering if anyone here has experienced it before?