Gyanavigyana Tritthapa, the ninth verse of the Bhagavad Gita spoke about. It depends on how you translate them. The traditional translation is that it's knowledge we have acquired by Shravana and Manana. Vigyana would be a deeper realization where you find the imminence of the divine in everything that you experience.
Swami Sarvapriyananda teaches Chapter 6 (Verses 10-14) of the Bhagavad Gita. In this series of talks, Swami Sarvapriyananda unfolds the highest truths of Vedanta through the study of the Bhagavad Gita (The Song of God).