How does the Narada Purana's description of Guru service compare to the methods described in Shri Santalilamrut?

The provided source material does not offer a basis for comparing the Narada Purana's description of Guru service with the methods in Shri Santalilamrut. The text from Chapter 0 mentions the Narada Purana only to establish that the tradition of writing a Guru's biography as a form of service is ancient. It also names Shri Santalilamrut as one of the great works by poet Shri Mahipati, containing biographies of saints. However, the text does not elaborate on the specific contents or methods described in either of these works, which prevents any direct comparison between their respective approaches to Guru service. The focus is on the existence and purpose of such texts in general.