Beyond the initial cure of Balaram's asthma, was there any later event that confirmed the profound and lasting connection established through Baba's grace?

Yes, a profound event later highlighted the lasting connection between Balaram and Sai Baba after his asthma was cured. Chapter 51 narrates that although Balaram's chronic asthma was permanently cured by a single puff of Baba's chillim, he experienced a sudden, isolated fit of coughing on one specific day. It was later learned that this occurred on the very day that Sai Baba gave up His physical body. This event was not a return of his illness but a final sign from Baba to his devotee, a powerful and unforgettable experience that demonstrated their deep, spiritual bond.