What was Tatya Patil's specific role in the Chavadi procession, and what was his relationship with Sai Baba?

Tatya Patil played a central and intimate role in the Chavadi procession. According to Chapter 37, Sai Baba would not leave for the Chavadi until Tatya arrived. Tatya would then put his hand under Baba's arm to help Him stand. He would also place a beautiful golden-bordered shawl over Baba and adjust it on His head. During the procession, Tatyaba held Baba's left hand. Their relationship was described as one of great mutual love, so close that Tatya used to call Baba 'Mama' (uncle), a detail that highlights their unique bond.