If that really is the story, of the nine being leviathans that meet Osiris on the moon, then it doesn't really add up either. By definition, leviathans are large creatures that live in the depths of oceans. So to speak of large, ocean dwelling creatures traveling through space to one planet sounds a little off to me, not to mention the lack of any large bodies of water on the moon. In some mythologies, leviathans are told to have telepathic powers, so using that, perhaps the 9 sent representatives that they spoke through to meet up with Osiris on the moon? If that may be the case, who's to say that the 9 are not the planets with ascensent minds that also sent representatives which they spoke through to speak with Osiris? Just an idea, I'm not really big on coming up with destiny lore, I leave that to the experts, just pointing out things that could be wrong or hold true from this one.