Idk I've thought about it and it's like, if time is created by the passage into the event horizon and it's an artifact of the n-dimension universe it can both imply that this n-dimension universe doesn't have "time" as we know it and our experience of it is, again, artifactual. However, the "movement" of this universe toward a n-dimension black hole kind of implies time, at least in the sense that we understand it (physical state changes of matter. It was there, now it's here! How'd it happen? Time!)

So... "Yes" but I would wager if my stoner theory holds gravity (pun intended) that whatever "time" exists in a parent n-dimension universe is not the same as time as we understand it? But maybe it is! Idk. Someone ask Neil degrasse Tyson why I'm wrong. And dont let him fool you that my model wouldn't account for red and blue shifts as our little matter-islands shrink and "accelerate away" from one another. It do! 🙂

Also fun to ponder with my silly stoner model here is that... Well... There is a supermassive black hole at the center of most galaxies... Like it's some sort of iterative and exponentiating recursive process? 😵‍💫

"Time" exists in any reality that isn't static, it's simply the concept of being with any measureable change. Doesn't have to be linear or consistent but if there's two quarks then there's time.

It does seem somewhat likely that the flow of time would be different if other universes exist. Hard to apply our physical laws to guesses entirely outside observable reality.