“When did the Buddha stop teaching?” Alan launches into a wide ranging discussion loosely revolving around shamatha but focusing upon the authenticity and reliability of the teachings of different Buddhist traditions. After the meditation (48:40) focusing on the sensations at the apertures of the nostrils, he then deals with questions (73:29) about differences between Buddha Nature and the substrate consciousness, their location, how one rests in each and the uniqueness of the Vajrayana method of realization in general. He also refers to some writings dealing with the 5 factors of stabilization and 5 obscurations.