And yes, they can be extremely powerful and direct for those who are ready to hear it, which, in a sense, could be anyone, anywhere anytime. It is considered good fortune to encounter these teachings for those who seek. In tumultuous times, they are readily available and presenting them is a bit of a toss of the dice.
I agree that there seems to be a difference between reading and listening to this kind of material. Perhaps we are more analytical when reading than passively listening? I appreciate the beautiful way that the lady on that channel paces her readings and allows for long pauses and her choice of ethereal music is rather intuitively appropriate. I have heard some rushed readings with no soundtrack that pale in comparison.
I return to them again and again myself and I am joyful that you found clarification as that is the essence: lucid, empty clarity.
Thanks for the note about the availability of the book, BTW. I would like to note that Keith Dowman is a good source, (as I have mentioned) not just for his astute attempts to do another, modern translation of these deep and difficult texts, (I have had the chance to compare versions) but he provides some excellent commentary, having studied and practiced with masters.
In my opinion, there are two kinds of Dzogchen, (as becomes evident in the ancient sources mentioned in Original Perfection. There is a form that was the result of some sort of frustration about teaching such an esoteric and subtle way, (which also relies on the proclivities of the student) and there is the radical Dzogchen that adheres more to its original intent and simplicity, yet is very profound. While the former rests comfortably in the cradle of traditional Buddhism, (and even benefits from a general knowledge and some previous practice) the latter hovers above that, so to speak, and I think it is even accessible to more people, including the secular world as long as the terminology is understood. It is said that it is so simple that that is what makes it difficult.
I also recommend the series on The Treasury of the Basic Space of Phenomena on the recommended channel. It is a poetic visionary piece that fleshes out Lonchenpa's vision and it is a fine, auspicious transmission of the apex approach. I may post the links here at some point for the benefit.
Rest well in your own true nature! As Longchenpa said, "How can a tight mesh of body, speech and mind reach out to touch its indestructible core?"
It ends where it begins! May Dzochen, (Great Perfection) spread across the land and may there be good fortune everywhere.
Tashi Delek