What was Gajanan Maharaj's reaction when Ratanji offered him a flower garland and fruits in the Masjid?

According to the account in Chapter 14, the events you are asking about did not involve Gajanan Maharaj. The text clearly describes Ratanji, a Parsi merchant, traveling to Shirdi to meet Sai Baba. Upon arriving at the Masjid for darshan, Ratanji "prostrated at Sai's feet" and "placed a flower garland around Baba's neck with love; he offered a weight of fruits at His feet." The spiritual figure who received these offerings and to whom Ratanji made his plea was Sai Baba, not Gajanan Maharaj, who is not mentioned anywhere in these source chunks.