How to capture knowledge within a link?

Is there an explicit way to annotate links?

I find this useful during notes that pertain to transfers between nodes, say A and B.
What I am doing right now is creating a new file named “A->B” because what I capture in there is not specific to A nor B.

Is there some way to explicitly differentiate between this kind of “link note” and an “entity note”
is this just another feature request that I should submit as an issue on the repository?