[Avodah] Can Elijah Hanavi decide halachic questions?

[Rich, Joel]

Recently in Daf Yomi (Shabbos 108a) the Gemara discussed whether Tefillin can be written on the skin of a Tahor fish. Rav Nachman bar Yitzchak says if Eliyahu will come and tell us that it is good then it is kosher. The Gemara asks so what if Eliyahu tells us, Rashi explains that Heter v'isur are not decided by Eliyahu because lo bashamayim hee, in other words Eliyahu Hanavi cannot answer any halachic questions.

How does this Gemara fit in with all of the places where we say that Eliyahu Hanavi is going to answer our halachic questions, etc.?
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General answer-he can not paskin new halacha, he can clarify facts.
KT
Joel Rich
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