According to the text, what specific detail of Baba's promise did Dev admit to forgetting, and how did this contribute to his confusion?

After learning the truth from Jog, Dev's remorseful self-reflection in Chapter 40 reveals the key detail he overlooked. While analyzing his mistake, Dev explicitly states, 'Only one word of Baba's—'When I come for the meal, two others will come with me'—I forgot to pay attention to that.' The Sanyasi had come for the meal accompanied by exactly two other people, perfectly matching the condition Baba had set in His promise. Dev's failure to register the significance of the Sanyasi arriving with two companions was a critical lapse. This oversight, combined with his preconceived notion about the Sanyasi's identity from a prior meeting, directly contributed to the 'delusion' that prevented him from recognizing his Guru.