What happened when Sai Baba promised to attend Dev's Udyapan ceremony, and did Dev recognize him?

According to Chapter 40, when Dev held his Udyapan ceremony, he invited Sai Baba, who promised to attend with two others. However, Dev did not recognize Baba because He came in the guise of a Sanyasi, accompanied by two companions. Dev served the three uninvited guests but remained doubtful and disappointed, believing Baba had not kept His word. He even wrote a letter to Jog complaining that Baba had deceived him and failed to show up, not realizing he had personally served the meal to Sai Baba himself.