What was the 'miracle of the conversation' that Sapatnekar overheard, and why was he so shocked by it?

The 'miracle of the conversation' described in Shri Sai Satcharitra, Chapter 48, refers to an event Sapatnekar witnessed while holding Sai Baba's feet. A shepherd woman sat down to massage Baba, and he began talking with her. Sapatnekar was shocked because as he listened, he realized Baba was recounting his own life story, not the woman's. The story was told as if about a merchant (Wani), but it was unmistakably his own, even including the deeply personal news of his late son's death. He was filled with wonder because the woman had no connection to the story, proving that Baba was addressing him directly through this indirect, miraculous method, revealing his all-knowing nature.