On Narayan Upanishad: The secret of the Rishi

Following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Question (Q): Sir, the very fact that the Rishi said, “Naham Kalasya”, probably, he could also have had an occasion where Koham started. When he started asking Koham, only then this process of negation started. So, how to explain this process?