So basically you are stating that people didn't understand what they were experiencing and that they were sort of assigning the wrong definition to that God. So it wasn't Zeus it was something that they didn't understand.
In Hume’s essay The Natural History of Religion (1757) he accepts the idea of a supreme being. His critique of polytheism suggests that it in itself was a form of evolution. According to Hume, man in his unenlightened state was working his way up to comprehending the “real” God: the one true God of Christianity
To any one, who considers justly of the matter, it will appear, that the gods of all polytheists are no better than the elves or fairies of our ancestors, and merit as little any pious worship or veneration. These pretended religionists are really a kind of superstitious atheists, and acknowledge no being, that corresponds to our idea of a deity. No first principle of mind or thought: No supreme government and administration: No divine contrivance or intention in the fabric of the world. (Hume 1757)
Basically you are on the path to atheism. You are just several steps behind, though unfortunately you seem to think you are several steps ahead of the atheist.
Why is it, you wish to stop the logical conclusion, with your preferred version of God? Why not follow your conclusion all the way through to the end? Which is what I did in my first post to you?
If you can logically conclude that there was some sort of misunderstanding with regard to early God belief, and that those believers were sensing some sort of dual reality then why is it you can't look at modern believers the same way.
There is nothing to suggest that the awarness of this dual reality, is in any way connected to a supernatural being. Rather all evidence points to it being a misunderstanding of a state of mind. Temporal lobe activity creating a vivid "dual reality" to the person experiencing such a state. It is similar enough in people to be a shared experience.
The emotional response to this state of mind, is to experience it as a reality. The logical response is to objectively be aware of what is happening and to understand that just because it seems real, doesn't mean it is real.
The logical person who takes LSD and keep their wits about them during a "trip" will understand that what they are seeing is just messing around with the brain. A person who didn't understand that would think it was real.