The concept you mentioned involves several speculative ideas and theories that are currently beyond the scope of scientific understanding. While black holes and the Big Bang are subjects of scientific study, the notion of black holes in other universes or their potential to create another Big Bang in our universe is highly speculative and not supported by current evidence or mainstream scientific theories.
In our current understanding, black holes are formed from the gravitational collapse of massive stars and are regions of spacetime with extremely strong gravitational forces. They do not act as gateways to other universes, nor do they have the ability to create new Big Bang events.
The nature of the Big Bang itself is still a topic of active research and theoretical exploration. It describes the beginning of our observable universe, but what, if anything, existed "before" the Big Bang or what may lie "outside" our universe is still a subject of investigation and debate among physicists and cosmologists.
It's important to distinguish between scientific knowledge and speculative ideas or theories. While the scientific community continues to explore and investigate the mysteries of the universe, any claims about black holes creating new Big Bangs in our universe or interactions between black holes in other universes remain in the realm of speculation and theoretical conjecture.