Sefer HaSichos 5752 vol. 2 page 465 ff. a two part overview (semi-text based) on this remarkable Sicha. Class One. A) Two levels: every shul is a מקדש מעט, but there is one that represents the Beis Hamikdash ממש which is called בית רבינו שבבל. B) This shul is special as it is the place...

Class Two. This class addresses the relationship between Bais Rabbainu ShebiBavel as a concept and 770. He discusses the idea of the last frontier being in the farthest place from Eretz Yisroel, and once we elevate even the sparks there Moshiach comes, beginning in and from the Beis Rabbeinu. Page 471-5.