That one is [flagged] and [dead], and doesn't even show up in search anymore, but does have some existing comments that probably should be moved to this submission.
The two submission URLs differ in the #fragment at the end. HN should probably ignore those when checking for duplicates, as in probably 99% of the cases two submissions that differ only in the fragment will be intended to be the same and the fragment difference will be due to how the submitter happened to read the article before copying the URL for submission.
That one is [flagged] and [dead], and doesn't even show up in search anymore, but does have some existing comments that probably should be moved to this submission.
The two submission URLs differ in the #fragment at the end. HN should probably ignore those when checking for duplicates, as in probably 99% of the cases two submissions that differ only in the fragment will be intended to be the same and the fragment difference will be due to how the submitter happened to read the article before copying the URL for submission.