Their glyphs were mostly on stone. This led eventually to the study of the stars and of the movement of the sun and moon, the Egyptians looked more towards the sun and their god Ri??. Could they have descended from the same more ancient source without knowledge of each other?
This powerful cross symbol has, of course, been appropriated by Christianity. We can see examples of this in the photo below: Left: a stone serpent within sight of the step Pyramid of Kukulkan at Chichen Itza, Mexico.
This is displayed when looking at the structure and purpose of the Temple of Inscriptions at Palenque, and the step pyramid at Saqqara. It is more the archaeologists task to present an account for these similarities than it is to ponder on the differences. Asians consume both versions of this plant for improved well-being of the body.