I did find a paper by J.F. Quack (and checked to see that yes, he's a genuine Egyptologist) which said this in part:

Venus is normally called either “the phoenix bird” or “the heron bird” and linked with the god Osiris. All these beings are also attested in other contexts. Only in the Late Period is the name “the morning star” applied to her with certainty (but see “Possible Attestations of Specific Planets in Other Contexts”). She receives the epithet “the crossing star.”

source: [oxfordre.com]

I don't have all the sources and resources that he does and I'm limited to one language (English)... but I'm not entirely convinced by his discourse.

-- Byrd
Moderator, Hall of Ma'at