Based on the experiences of his devotees, what was Sai Baba's connection to Lord Vitthal of Pandhari?

The provided text in Chapter 4 illustrates a profound connection between Sai Baba and Lord Vitthal. Devotees would look at Baba and declare, "This is the living Lord of Pandhari." Baba Himself encouraged devotion to Vitthal, ordering Das Ganu to hold a Name-week and promising Vitthal's appearance with the condition of faith. He showed his identity with Vitthal when he told Bhagwantrao Kshirsagar that by neglecting the family idol, he was keeping both Vitthal and Baba hungry. Furthermore, Baba confirmed Kakasaheb Dixit's private vision of Vitthal, treating the event as a real visit from "Vitthal Patil."