I read almost to the end of the translated hieroglyphics last night as bedtime reading. They are so exquisite, as is so much of AE. One thing I keep forgetting to say is that I have observed in all the dragon/snake spear stories is that the serpent never actually is shown as dead, just subdued, tamed, in some way. Even the serpent on the solar boat regurgitates the spear every day.The snake is infinite, and meant to stay alive from what I have seen.
Regarding the round Host wafers. In Ireland in particular the incoming catholic church found it nigh on impossible to get the local people to stop having the Sun as their main symbol. Sol Invictus in the Roman Empire. That is why they imposed the cross over it.
I have never found anything much in the catholic traditions that was original, just superimposed over long standing symbols and figures of note, even down to swinging incense around.
I would guess that the 'host' DOES represent the Sun. I remember having a conversation with a Nun years ago, and she explained that the wafer and wine were the flesh and blood of Christ.Added to the red of the Cardinals robes being the blood of Christ. I then told her why the 'Virgin Mary' was in fact the Moon Goddess, hence the stars around her and her blue cloak of the sky and so forth. We had quite a lively time...