Removing the veil of separation

[Anders]

Isis signifies the subconscious mind ...

That would explain why Isis is said to be sleeping. Our subconscious is below (sub) our conscious mind and can be seen as sleeping. I found:

"With this in mind to our story, we can see how first the intellect aided the subconscious mind (isis) to fashion a Golden phallus, which fathered Horus. It was the intellect again that restored Horus’ eye and gave him a third eye, an inner vision, so that he and his father (consciousness) could traverse the invisible plains and unify the upper and lower kingdoms of the self." - https://www.kymiaarts.com/blog/archives/03-2017

And the veil causes a separation between the conscious and the subconscious. To align with the unity compass (Ra talked about making our compasses point in one direction) means bringing harmony between the subconscious and the conscious mind. When our minds are veiled we often have to use the intellect to subdue or block subconscious urges, which indicates an inner conflict between the subconscious and the conscious mind.