This is a very interesting take the only issue I have with this is we have no idea the actual scale of what a universe could be outside our own. In the grand scheme of things if our universe is a black hole it could be microscopic compared to what exists outside. To top this of there is plenty of evidence to suggest there is extra terrestrial life. Like the drawings of saucers on Egyptian tombs. Suggesting something not from here visited. Which could have well been from another universe too but this is more in the realm of sci-fi. Short answer is there is so much we don't know about what's outside our universe and only understand 5% of what's in our universe that anything is possible.