Chabad will never understand, that even if the Melech HaMashiach came from the dead, it could be any of these great tzadikim, all of which were descendants of David HaMelech:
KING SOLOMON
KING HEZEKIAH
ISAIAH THE PROPHET
KING JOSIAH
RABBENU HAKODESH (COMPILER OF THE MISHNAH)
RABBI ELIEZER HASANDLAR (FROM TALMUD).
MAHARAL OF PRAGUE
RABBI ELIMELECH OF LIHZENSK
MANY OTHERS
In other words, proving Melech HaMashiach from the dead does NOT prove that Rabbi Menachem Mendel Schneerson was the Melech HaMashiach — far from it.
Additionally, Chabad is NOT debating in good faith.
They are not searching for the truth about the Melech HaMashiach;
they just want to “win” by any means possible.
I cannot remember even ONE person from Chabad who believed in Melech HaMashiach from the dead, when Rabbi Menachem Mendel Schneerson was alive and healthy — only AFTER he died, did Melech HaMashiach from the dead become popular with Chabad!