I recently tried to help a user to solve an issue by adding a comment with a link to another answer that I wrote a couple of days ago.
This is the question where I wrote the comment (Question A):
and the following is the question I linked for solving the issue (Question B):
Classifying slope (flat, slope, steep, very steep) in QGIS?
They are both about the classification of rasters and could be solved with an analogous procedure. While the OP of the Question A confirmed that the provided link offered a solution, the asker of the Question B didn't accept it (but I'm quite sure that my answer offered a valid solution).
In the past, I voted to mark one of the two questions as a duplicate of the other one but, in this case, it is not possible since there isn't an accepted answer on Question B.
Which should be the suggested behavior in this situation? Leaving the comment with the provided link without any further action, writing a similar answer on the new question (i.e. on Question A, this is what I have done), waiting for the approval of one of the two questions and marking the other one as a duplicate, or what else?
I found this similar question on GIS Meta:
Should we close Questions as duplicates of old, unanswered Questions?
but it didn't help me to understand.