Can you explain the connection between Sai Baba and the deity Vitthal? I've heard they are linked.

The texts in Chapter 4 provide several examples of Sai Baba's profound connection to Lord Vitthal. When Das Ganu organized a week-long chanting event (Saptah), he requested that Vitthal must appear. Baba placed a hand on his chest and assured him that Vitthal's form would indeed appear, provided the devotee was full of faith. In another instance, Kakasaheb Dixit had a vision of Vitthal during his morning meditation. When he went for Baba's darshan, Baba knowingly asked him if "Vitthal Patil had come," confirming the vision. Later that day, a picture seller arrived, and one of the images was an exact match for the Vitthal Kakasaheb had seen, which he bought and installed for worship, all as a result of Baba's grace.