Question: Why aren't more "Uninteresting Connections" being deleted by the Foxhound purge process?
Answer: An "Uninteresting Connection" is a connection that isn't doing anything and isn't preventing any other connection from doing anything.
In particular, it's a connection that
For example, if your Foxhound database contains a large amount of Monitor data for idle connections to a target database, check to see
if those connections were holding any locks. If so, then the "Uninteresting Connections" purge criteria won't
be satisfied; try using the "Purge all sample data: after 1 day ... 1 week ..." criteria instead.
The Foxhound Options Page - Purge Process