User blog comment:Mohrpheus/Spiritual Imbalance in Bleach - The End of the World?!/@comment-1590714-20100902215434

But do we really have any concrete evidence that Hollows are still practically human in the first place? We don't really know how much the body changes in the Hollowfication process. Let's say that if a Hollow eats a human, that Human is absorbed into the Hollow or, most likely, destroyed. But what if a Hollow eats another Hollow? We can't be sure what would happen. Maybe some spiritual beings, such as Hollows and Shinigami, are really absorbed and their power is added to that of the Hollow, then those souls that were those Hollows would also merge with this Hollow. Then, these souls wouldn't be destroyed, and making an Adjuchas or Menos-class Hollow wouldn't be such a sacrifice. And, if such a high-level Hollow is killed, that could mean all souls are cleansed at once.