The texts mention visions of Vitthal. Could you explain the experiences of Kakasaheb Dixit and Das Ganu in Shirdi?

Certainly. Chapter 4 details how Sai Baba facilitated visions of Lord Vitthal for his devotees. In the case of Das Ganu, Baba instructed him to organize a Name-week (Saptah) and promised that Vitthal's form would appear if the devotee possessed sufficient faith. The text confirms that at the end of the Saptah, Das Ganu did indeed receive the sight of Vitthal in Shirdi. Similarly, Kakasaheb Dixit had a spontaneous vision of Vitthal during his private morning meditation. As recounted in Chapter 4, when he went for Baba's darshan later, Baba confirmed the vision by asking, "Vitthal Patil had come, right? Did you meet him?" This demonstrated that Baba was omniscient and could grant such divine experiences.