Can you elaborate on the story of the Yogabhyasi who visited Sai Baba with Nanasaheb Chandorkar?

Certainly. Chapter 23 narrates that a Yogabhyasi, a practitioner of Yoga, accompanied Nanasaheb Chandorkar to the Masjid to see Sai Baba. This individual was well-studied in the Yoga Shastras of Patanjali but was frustrated because he could not achieve a state of Samadhi (intense meditation) for even a moment. He held the belief that Sai Baba, being a "King of Yogis," could bestow grace upon him, remove his doubts, and enable him to finally achieve Samadhi. With this specific goal in mind, as described in Chapter 23, he took Sai's darshan, only to find Him eating bread and onions, a simple act that challenged the Yogi's preconceived notions of what a great spiritual master's activities should look like.