[anateus]

This immediately made me think of the C2 Wiki. It has a style similar to Taaalk in the sense that entries are often a mix of conversation and "exposition". It allows for that sort of linking by being a ("the") wiki. Perhaps that's a good model? A wiki where authors are visually marked as on Taaalk but otherwise all the accouterments of a wiki.

The not-quite-vaporware C2 followup implements some aspect of what you're describing via a sort of columnar layout.