Suppose two questions are distinct but elicit similar answers, say:
According to the Protestant viewpoint, what is the origin of God?
According to the Protestant viewpoint, does God have a creator?
Short and concise answers for these two questions will likely be different ("God has always existed" and "God had no creator"), have different implications, and use different proof texts. However, as answers become longer and more detailed, it's likely that they will overlap, perhaps significantly.
Would these questions be considered "duplicates" or "related"?