According to Chapter 48, what is the difference between a regular Guru and a true Sadguru?

Chapter 48 of the Shri Sai Satcharitra draws a clear distinction between a regular teacher and a true Sadguru. It explains that a Sadguru is not simply someone with knowledge of Vedas or Shastras, or one who can give eloquent talks on Brahman. The text cautions that many have vast verbal knowledge but lack self-experience, making their teachings "verbally hollow." A true Sadguru, as described in Chapter 48, is one who possesses not only complete knowledge but also the direct, full experience of the truth. This experiential wisdom is what gives them the authority to truly enlighten a disciple.