It may be that black holes punch through the barrier that separates us from our neighboring dimension(s), where the dark matter exists (and where our matter is dark matter to them). How that relates to your second sentence is well beyond my understanding.

There are six total vibrational dimensions, inhabiting this same 3-space, with no direct physics-style interaction between them except (somehow?!) collectively contributing to the totality of inertia that keeps the galaxies from flying apart.

All I have are breadcrumbs, my friend, and some understanding of how it fits into our lives.