>>97729341In all honesty, none of the Moon Knight arcs are connected. In the Ellis arc, Moon Knight is completely sane - Khonshu is an alien consciousness in his mind.
The follow-up arc took place mainly in Moon Knight's head, and it ended up with him integrating his various personalities in one. He also killed Khonshu, who wanted to take control of his body.
This is YET ANOTHER interpretation of Moon Knight, and another take on his multiple personality disorder.