Coracle pulls kind 31990s from people you follow. So sort of both. But people don't often publish 31990s, so there aren't a lot of recs. Are you saying that there are lots of kind 3's pointing to profiles that have published kind 31989s? I guess that makes sense, but it sort of confuses people who follow me with people who recommend Coracle, so I would go with explicit only in this case.