How did Sai Baba seemingly fulfill his promise to visit Dev, and why was Dev left feeling confused and disappointed?

Chapter 40 narrates how Sai Baba likely fulfilled his promise to visit Dev by appearing in the guise of a Sanyasi accompanied by two companions. This trio arrived uninvited at Dev's Udyapan ceremony and asked for a meal, not money. Dev hosted them lavishly. However, Dev was left confused because he failed to recognize Baba in this form. A "veil of Maya" clouded his perception, making him see only a guest wanting a meal. In a letter to Jog, Dev expressed his disappointment, feeling that Baba had "deceived" him because he didn't receive a clear, direct experience and was left with doubt despite having served three unexpected guests.