"This documentary traces the evolution of Advaita - from the ancient rishis to teachers like Shankara and Ramana Maharshi - and examines whether or not modern teachings have maintained the power and clarity of the ancient traditions from which they evolved.
Swami Tadatmananda is a traditionally-trained teacher of Advaita Vedanta, meditation, and Sanskrit."
https://youtu.be/R9pemPIBhLE