How did Sai Baba potentially fulfill his promise to visit Dev, and why did Dev fail to recognize it?

The narrative in Chapter 40 strongly implies that Sai Baba fulfilled his promise to visit Dev by arriving in the form of the Sanyasi, accompanied by two other men. This made a total of three uninvited guests who were served a meal by Dev. Dev failed to recognize this fulfillment due to what the text calls a "veil of Maya" that clouded his perception. He was mentally fixed on the idea that the man was simply "some guest who has come to get a meal," which strengthened his state of delusion. He was expecting a direct, unmistakable sign, and this subtle manifestation left him feeling disappointed and writing to Jog about how Baba had seemingly deceived him.