How did Sai Baba appear to his followers in different forms or through other people, based on the events in chapter 33?

According to Chapter 33, Sai Baba could manifest his presence in various ways. For instance, with the devotee Karnik, Baba's presence was felt through the actions of another saint, Narsing Maharaj, who forcefully took a Rupee in a way that made Karnik feel "like Sai himself was accepting the Rupee." In a different story concerning Appasaheb, the text explicitly discusses Baba's appearance in disguise, asking, "why would Baba come in Fakir form?" This suggests it was a common belief that Baba would take on the form of a Fakir as a "pretext for Dakshina" to interact with and test his devotees.