According to Chapter 48, what are the different spiritual outcomes of listening to the Satcharitra versus directly serving Sai's feet?

Chapter 48 describes distinct, though related, spiritual benefits for both listening to the Satcharitra and serving Sai's feet. For those who listen "with a pure heart and good faith," the text promises that "all their desires will always be fulfilled" and they will attain devotion. On the other hand, the chapter describes a more direct impact on personal conduct and liberation for those who engage in direct service. It states, "By serving Sai’s feet with a devotional spirit and remembering Sai, the senses will not behave as they please, and crossing the ocean of existence becomes easy and certain." This suggests that while listening fosters devotion and fulfills desires, direct service provides a more potent method for gaining control over the senses and ensuring the crossing of the worldly ocean.