Moshe abstained from physical intimacy because he was above time, above malchus, the world of female.
here you see further reason why moshiach is not from the tribe of moshe, levy, but from yehuda, malchus.
though the first redeemer (moshe) is the final redeemer (moshiach)?
perhaps moshe joins with moshiach , levy joins with yehuda, through the connection of the marriage of osnat to yosef, for osnat's mother was dina, who was saved by levy and represents her tribe. that way moshiach ben yosef (here including levy) and moshiach ben dovid (yehuda) partner in transforming the world.
the rebbe says that moshe is the first redeemer because he gives the torah which is the source of salvation. moshiach is the one who implements the plan (torah).
Also in this selection is the notion that authentic torah depends on reaching a deeply sensitive, heartfelt love, called reusa dliba