Class One. Tishrei is a Teshuva event and therefore the process begins בכסה ליום חגינו which means that the highest revelation is hidden initially and only revealed afterwards. On Shmini Atzeres the effect of the Teshuva is implanted and takes root, to grow throughout the year. This is special for the Jewish People. The difference between Tzadik and Ba’al Tshuva has many aspects including the idea of time [Teshuva takes no time] therefore there is no time between Sukkos and Shmini Atzeres.
Class Two. The reason we dance with our feet and the feet of the Torah is because the feet are the vessel for the Yechida. Since this is a celebration of the Torah of Teshuva, it is the Yechida revealed that only the feet can represent.
