What this information about ‘massive quasar clusters’ tells us is that we really know very little about how the UNIVERSE was 60 billion years ago, and nothing about how it is now.
We aren’t even sure if the Universe is ‘infinite’, or not, and it is very likely we will never ‘know’. IF one were to assume that the outer extent of the finite Universe is expanding at the speed of light, then we will never , ever, be able to see ‘past’ it. Plus, it’s had a fairly large head start.
I thought all cosmological models had the universe...this universe...at about 14 billion years old. So 60 billion years ago? Must be another universe you refer to.