Edges linking nodes in information systems (e.g. Evergreen notes should be densely linked) should themselves be labeled in some way which contextualizes the association. It’s often not enough to say “X is related to Y”: better to say “X goes into more detail about Y in the context of Z.”
The extra context will be a cue for your memory or evaluation of the linked material, which will help you effectively navigate the knowledge graph and retrace your former thought processes.