There are no related links just two sets of links: to this topic; and from the topic. It is confusing you because the topics you refer to are cross-linked to each other.
The links above the topic map are topics that have links to this topic which includes the topics from which this topic might be split. If you follow the links here they will take you to the relevant post in those topics.
The links from this topic are the popular links section that is expanded in the topic map.
The following topic is long enough to automatically display the popular links: