How did Sai Baba demonstrate his profound connection to Lord Vitthal for his devotees?

Sai Baba demonstrated his connection to Lord Vitthal through several experiences detailed in Chapter 4. He assured Das Ganu that Vitthal would appear during a Name-week, emphasizing that the devotee must be full of faith. For Kakasaheb Dixit, Baba confirmed a meditative vision of Vitthal by asking if 'Vitthal Patil had come' and warning that Vitthal is a 'big runaway.' This was later validated when a picture matching the vision was brought for sale. Furthermore, Baba showed his respect for Vitthal worship by reminding Bhagwantrao Kshirsagar of his forgotten duty to offer food to his family's Vitthal idol, stating that by neglecting Vitthal, Bhagwantrao also kept Baba hungry.