“I am 100% certain Rav Ahron Feldman did NOT say what you claim he did simply because it makes no sense.”
The vast majority of Rabbonim and Roshe Yeshiva and Poskim all say that to believe that a dead man is Moshiach, is kefirah. The same goes for davening to a dead Rebbe, proclaiming that the Rebbe runs the world, and deifying the man.
Unfortunately, this is now the belief of almost all Lubavitchers. It is very rare that you can find one who will say “The Rebbe is not Moshiach”
So what is attributed to Rav Ahron Feldman and all the others, including my Rov, definately makes sense. I wish it weren’t so as this post Rebbe death philosophy has created a split in klall Yisroel that may never be put back together. Lubavitch is now a rudderless ship.
Solution: appoint a new Rebbe and join klall Yisroel as it used to be.