Tau.Neutrino said:

Could the early universe be speeding up while the older universe is slowing down?

Or is it the other way around ?

Is the hubble tension they are measuring a discrepancy between the speed of the early universe and the older universe because both are different.

?

The density differences between the early and late universe would effect speed, yes?

If dark matter and dark energy came later in the universe evolution that might also effect speed?