Can you recount the story of the Yoga practitioner who came to visit Sai Baba with Nanasaheb Chandorkar?

Certainly. Chapter 23 narrates an incident involving a practitioner of Yoga (Yogabhyasi) who accompanied Nanasaheb Chandorkar to the Masjid for Baba's darshan. This man was well-versed in the Yoga Shastras of Patanjali and others, but he struggled to achieve Samadhi (intense meditation) despite his knowledge. He came with the hope that Sai Baba, whom he considered a "King of Yogis," would show him grace and help him achieve this state. However, as Chapter 23 describes, upon taking Sai's darshan, the practitioner was met with the sight of Baba simply eating bread (bhakar) along with onions, a very mundane and human act.