I marked a question as duplicate. After reaching 5 consents, the question is closed and marked as duplicate. Form the newer to the older question there is my "potential duplicate" link. Some finer details may be different, however. Now the perfect solution would obviously be, to merge the questions and at least the accepted answers, but this is really time-consuming.
Wouldn't it be helpful, also to have a link from the older (non-closed) question back to the closed newer ones for the potential differences or is the search function considered sufficient?