What are some examples of how Sai Baba demonstrated his oneness with Lord Vitthal?

Sai Baba demonstrated his connection to Lord Vitthal through several experiences with his devotees. According to Chapter 4, when Das Ganu organized a Name-week (Saptah), Baba placed a hand on his chest and promised that the form of Vitthal would appear, provided the devotee was full of faith, which later happened for Das Ganu. In another instance, Kakasaheb Dixit had a vision of Vitthal during meditation. When he went to see Baba, Baba confirmed the vision by asking, "Vitthal Patil had come, right?" Baba's respect for Vitthal worship was also shown when he chided Bhagwantrao Kshirsagar for neglecting his father's Vitthal idol, stating that this neglect made both Vitthal and Baba hungry.