It could and count not be.
Sometimes A and E write middle season episodes that are smaller in nature:
S1: Dreamy
S2: The Doctor/ Lacey
So it might just be a middle season episode.
EDITED to ADD
Of course they also write the really big story changing episodes too:
The Pilot
The Thing You Love Most
The Heart is a Lonely Hunter
The Stable Boy
A Land Without Magic
Queen of Hearts
Manhattan
…And Straight On Til Monring
Going Home
(some other too, but those are the BIG BIG BIG ones)
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"He was a lot of things to me" "The only conclusion was love"