Sometimes questions get closed as duplicates of questions that are already closed. Is this something we should be doing?
The purpose (as I understand it) of duplicate closure is to make sure that a discussion of a certain topic has one place to live on the site and is not divided or duplicated in multiple places.
However, closing a question as a duplicate of another question is simply shutting down the question entirely and does not allow any options to actually engage in the question without one or the other being reopened. This seems to not match the purpose of duplicate closure to me. Obviously if the question has close-worthy issues then they should be closed accordingly, but closing a question as a duplicate of a question that was closed for issues the new one doesn't have does not seem right.
Should we ever duplicate a question to another closed question?
Please answer for cases where the new question has a closable issue and one where it doesn't (duplication aside).
See this question for an example of this happening (I ask about this question specifically in How should we sort out this question that was closed as a duplicate of another closed question?).