According to Osho, the 'aha-experience' is not an experience but a thought-free shock when the unknowable shatters all concepts; this is exactly what Ashtavakra teaches—the Self cannot be recognized by past knowledge or effort, it descends as grace. Janaka’s sense of wonder is the first fragrance of this 'aha': incredulous astonishment, 'Me? It happened to me!', before mind resumes labels.
It’s the sudden wow beyond words that Ashtavakra points to, and Janaka’s amazement is how it first feels.