Nope. Per consensus on Closing Story-Ident questions as duplicates (where there's no acceptance):
story-identification questions should only be closed as duplicates where both answers are accepted, regardless of the similarity between them. (If the OP posts a "yes this is it" comment, that's as good as an acceptance.)
Simple, easy to administer.
In this case neither answer got accepted, may that be in comments or checkmark, so both stay open.
The only exception might be if an user re-posted their story-id question instead of editing it; in which case, if it's obvious the works looked for are the same (not based on answers but the combination of same OP+same question), then we can close as dupe, and merge after that.