Certainly other areas of knowledge must be able to confirm what is described in the OMR analysis, and according to an appropriate time period extending back to the period around 12,000 BCE, Manetho and his writings do confirm the extent of time that the analysis does identify.
One interesting piece of information concerns the Amduat, and more specifically the fifth hour of this, seen in what is called the Book of the Hidden Chamber. A brief description of this image and panel is:
"This great god is towed along the proper ways of the Duat,
in the upper half of the secret cavern of Sokar-upon-his-sand.
Invisible and imperceptible is this secret image
of the land which bears the flesh of this god."
A fuller description can be found here: [www.sacred-texts.com]
The image itself is quite extraordinary in its portrayal of a grand description, and besides the translation/interpretation we are given for it, there is always the possibility that the imagery does come from a source that has been explained as best as it can be. But I do so like the image of it, from amduat.com.
I would like to include another image, of the sky (for 627 CE, but this is not an essential date other than the location of the Sun) which shows the Sun at a height of 51° 51' 14.4", being the angle of the pyramid. While the ecliptic is not shown, the equatorial line is. The central green line is the southern meridian, and the horizontal green line is the horizon, as seen from the location of the pyramid.
The interesting thing is that the Sun is beneath the equatorial line, and if it were on the line it would show an equinox. Other than that, the image shows midday.
The image of the glyph above the entrance to the pyramid has a fascinating portrayal of a scene that is certainly important when it comes to the pyramid, and I have identified that it doesn't just adorn the pyramid in a position that was once hidden from view; covered by not just layers of gabled blocks and core blocks but also the casing blocks. It is certainly accepted that it was hidden, but it also alludes to a secret of the pyramid.
By combining some very particular observations of the glyph construction, the architecture of the pyramid, and the overlay of astronomical map, a hidden area is suspected to be within the pyramid.
It is my conjecture that the fifth hour scene above does allude to this hidden area, and it does so by combining the central feature of that hour - the falcon-headed man holding the wings of the triple-headed serpent, housed between the two-headed lion and wholly within a pyramid that is surmounted by the head of Isis. A solar barque is seen to be pulled in from the left, where the line of its 'rope' arcs up and over the pyramid, reaching Khephri as he emanates from a sacred mound.
Yes, there is a simple association between all the images, and it could be quite speculative, but the placement of this secret area in the upper part of the pyramid is quite particular, especially as the base of it is exactly upon the half-height of the pyramid. As an astronomical overlay, according to the scale of the map used upon the form of the pyramid, the Sun does not attain the apex of the pyramid but passes exactly through the pyramid, right upon the curved lines between the two mounds of the glyph-form.
Could it be that the falcon-headed man represents some aspect of the Sun within this hidden area?