Based on Amir Shakkar's story, can you explain Sai Baba's daily and alternate-day routine involving the Chavadi?

As detailed in Chapter 22, Sai Baba's routine provided Amir Shakkar with constant opportunities for his darshan while he was confined to the Chavadi. Every morning, Baba's path for collecting alms took him right past the Chavadi, giving Amir an easy vision. Similarly, every evening, Baba would come in front of the Chavadi to salute the directions before returning to the Masjid. The most significant part of this routine was that every alternate night, Baba would go from the Masjid to stay in the Chavadi. On these nights, after the aarti and the departure of devotees, Baba and Amir would have personal conversations.