What was the profound significance of the single day Balaram's cough returned after being cured by Baba?

After Balaram Dhurandhar was completely cured of his six-year-long asthma by smoking Baba's chillim, there was one isolated incident where he experienced a sudden fit of coughing. As detailed in Chapter 51, this event puzzled everyone. It was only upon later inquiry that the true, somber significance was revealed: the fit occurred on the very day and at the very moment that Sai Baba had given up His physical body. This recurrence of his ailment was not a relapse but a final, poignant sign from his Guru, a mysterious connection that marked Baba's passing for his devotee. After that day, the cough never troubled him again for the rest of his life.