How does the incident with Dev's Udyapan feast demonstrate Sai Baba's omniscience and ability to transcend physical limitations?

The story of Dev's Udyapan feast in Chapter 40 is a powerful demonstration of Baba's divine attributes. His omniscience is shown when he tells Jog, "When the letter is opened before Me, the state of mind within the letter is already known and stands before Me in person," revealing he knew Dev's feelings even before the letter was read. His ability to transcend physical form is the core of the miracle. While his physical body remained in Shirdi, he manifested as a Sanyasi in Dev's home. He stated, "In the worldly sense, I did not move from here; but I came and ate at the Udyapan." By appearing in this guise with two companions, he fulfilled his promise to the letter, proving that his word is infallible and that he is not bound by ordinary physical laws.