The idea of looking out and back into astronomical history is really
silly , childish and an enormous waste of time without applying the
Equation of Light correction,first applied by Ole Roemer as a tiny
observational anomaly in Jupiter's satellite Io.

The 21st version of the observational adjustment (EOL) relies on the
rotation of the foreground stars to the external galaxies using
supernova data as both a distance and time marker.

Cosmological modelling on the scale of galaxies does not even exist,not
even in outlines and this rubbish of looking back to the trillionth of
a second no longer impresses anyone,having no real roots and no
direction beyond theoretical wishful thinking.