Ken: "The rising of Ra displaces the hour-stars; they are dispatched or sent away at the beginning of day. This seems to be a rather clear demonstration that the AE didn't think of a starry sky during the day but, rather, one dominated by Ra, the sun god."
Of course they did not think of a visible starry sky by day - no one is saying they did!!!!! - the daytime sky was dominated by the brightest star in their sky - the Sun (ra).
The glare of the Sun's light gradually overwhelmed the light of the other stars so they were not visible, but the stars were still in the sky - if not - where were they?
btw Unis 'sent off' the hour-stars.
CT