A recent question about returning to the Dark Ages reminded me of another question I remembered seeing. After some digging, I found a similar question and suggested it might be a duplicate of the OP's question.
Later, when I checked the close review queue, I noticed the Dark Ages question was being closed as a duplicate of a different question that Mołot linked and was the question I had originally been thinking of but couldn't find.
Only thing is, the question Mołot linked is marked as a duplicate of the one I linked.
Is there a general policy on whether to mark questions as duplicates of duplicates? Should we link to any question in the chain or to the root?