Scientists believe there are hundreds of billions of Galaxies, Could there be billions of Universes also?

As our understanding of the known Universe expands I do believe it could be possible to start discovering other areas that are composed of hundreds of billions of galaxies with clear boundaries or enough separation to what is already known to clify these as different universes. What are your thoughts on this. For example lets say that as our telescope technology expands to where Hubble is considered a very weak dinosaur compared to new generations of telescopes and technology gets to a point where lets say we find a complete expanse of celestrial bodies and clusters at the other end of black holes which may consist of trillions of light years of void in separation from one end to the other wouldn't that need to be clified as a separate Universe?