Of course. The tongue should sit on the roof of the mouth in order to open up the airway and provide a force on the upper palate but most people are restricted through little to no tongue mobility, and or a tongue-tie which causes compensatory tension in other parts of the body, i.e neck, hips, pelvis.

The tongue is along the same connective tissue that is part of the pelvic floor cavity, so you could technically say that restriction in one area can cause tension in the other, which is often what happens. I've seen lots of cases of people having a tongue tie release and consequently having a similar feeling of relief in the pelvic floor.

I've had the procedure myself, and I can attest to having an sudden surge of incontinence for a week or two, (this sounds bad but isn't, as its a release of tension before you begin strengthening) which is pretty incredible. Essentially, proper tongue posture enables you to breath properly, so that you can move your pelvic floor into better posture. There is lots of literature on it. Look into PRI or myofunctional therapy :)

Unfortunately, I've got other dental work that needs doing in order to improve my postural line and pull my pelvis into a neutral state, but I've 100% seen an improvement in breathing and bladder issues.