For avijja, she acknowledges that there is no avidya in the Vedas. Thus, she resorts to the mysterious state in which neither sat (Being) nor asat (Non-Being) exist, which is expressed in the Nasadiya Sukta. She equates this state as the Vedic antecedent to the Buddha's description of avijja.
Now, here's the bummer. Doubt has now been thrown on the age of the Nasadiya Sukta. It has been suggested that the Nasadiya Sukta is a very, very late addition to the Vedas, and it was composed as a reaction to the Dualism of Sankhya, during the first centuries of the Common Era. This seems to be borne out by the fact that in the Chandogya Upanishad, the zeroth point was represented not by this neither Being nor Non-Being, but by just sat/Being. At least in the Chandogya's time, the controversy was simply over whether the First was Being or Non-Being, not the neither-nor of the Nasadiya Sukta. As for the position in the Brihadaranyaka Upanishad, the First was simply Atman. I cite these 2 Upanishads, as there is general consensus that the Buddha was familiar with their concepts.
Jurewicz then goes on to trace the Buddhist sankhara as corresponding to the abhisamskaroti of the Satapatha Brahmana. This is a document which does not appear to be controversial and is agreed to be pre-Buddhist. I think there's some merit in the equation, as abhisamskaroti pops up many time in the Pali suttas as abhisankaroti as the verbal synonym for sankhara in discussions of DO.
If we now discount the Nasadiya Sukta as furnishing any Vedic antecedent to DO, I think we can safely say that during the Buddha's career, the First Point in Indian cosmogony was either Sat or Atman. The Buddha made 2 innovations to address the pre-Buddhist cosmogenic cycles -
1. He went further back in denying Sat/Being (see SN 12.15, where the sabbam atthi/sabbam natthi reference could have been in reference to the Chandogya debate about sat and asat) and Atman, and putting in their place avijja; and
2. Instead of the prevailing discussion of the causal structure of "this leads to that", the Buddha emphasized the "conditionality" aspect of causation by asking the negative question in analysing the reverse order of Dependant Cessation, ie "When what does not exist does X not come to be?" (SN 12.10, which interestingly took place before His awakening, perhaps suggestive of His time spent putting aside the Upanishads).
Perhaps the parody theory needs to be re-examined


