Good try? You just said by your own admission you have no idea how long Autumn and Spring are typically. I simply came to the realistic conclusion that they are of similar varying length to the other seasons unless told otherwise. One could reason the lack of information about the length of Autumn and Spring is simply due to the significant emphasis placed on the magical properties that directly influence the varying lengths of Summer and Winter.
You are pretty sure they are little more than buffers for turning seasons. Where is this explicitly said or written that this is in fact the case?
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After reading your reply to the other poster by your own admission this is really just about your disapproval with the pacing of the show and not really about realism in these scenarios which is fine.