How did the incidents of the khaja and Baba's cough both serve to prove his omniscience to Laxmichand?

Both events, as narrated in Chapter 28, worked in tandem to demonstrate Sai Baba's all-knowing nature to Laxmichand. In the first instance, Baba addressed Laxmichand's physical desire by miraculously arranging for khaja to be served, fulfilling a craving the devotee had not spoken aloud. This was a subtle hint of his inner knowledge. The second incident was more direct and profound. After Laxmichand had a private, fleeting thought about Baba's cough being from an "evil eye," Baba verbalized that exact, unique thought the next day. This progression from fulfilling a hidden desire to echoing a secret thought provided undeniable proof to Laxmichand that Baba possessed complete inner knowledge, solidifying his faith entirely.