“is Eliyahu considered “min hashamayim” and how does that affect teikus”
The MaharatzChiyus has a chakira where he says that ???? ?? ????? ??? does not apply to a machlokes in metzius. He the n attempts to show that teikus are always deep down a machlokes in metzius. The techeiles debate certainly centers on a machlokes in metzius. Presumably then, ???? ?? ????? ??? would not apply and therefore Eliyahu, a bas kol, or any other form of heavenly intervention should be able to resolve the issue.