Can you walk me through the sequence of events that caused Dev to misidentify Sai Baba at his feast?

Dev's confusion stemmed from a series of events detailed in chapter 40. Before Dev had even invited Baba to the Udyapan, a Sanyasi had visited him to collect funds for cow protection. Later, after inviting Baba, this same Sanyasi appeared on the day of the feast and asked to be fed, saying he would return with two others. The Sanyasi and his companions did return at noon and were served a meal. Because Dev's initial interaction with the Sanyasi was about fundraising, he failed to see this person as a guise for Baba. He thought of him only as a guest who came for a meal, and his mind was clouded by this delusion, preventing him from recognizing that Baba had kept his promise.