1 Of course coherence of a text depends on the realization of rhetorical relations (Mann and Thompson 1987) as well as referential continuity, and the latter is to an extent a byproduct of the former, as clauses that are rhetorically related also tend to mention the same entities.
even when a set of facts is arranged in a hierarchical RST structure, there are still many possible linear orderings with noticeable differences in referential coherence.