In this Maamar the Rebbe adds a fifth level above the four levels of Geula discussed above.
More specifically it breaks down into:
1) Iskafia and Ishapcha (the 2 ideas of מצה or סור מרע ועשה טוב)
2) which then becomes four: סור מרע ועשה טוב in Torah and mitzvos which radiate from סור מרע ועשה טוב in learning Torah (Nigla and Pnimiyus)
3) Then concludes that all of the above are אתכפיא and אתהפכא, the idea of Mesiras Nefesh (the crown above the Yud) that in life is הודאה.
The two Matzos (before and after Chatzos) represent all the above, moreover after מתן תורה they are both included in the one Kazayis Matza we eat at the Seder.
