Enterprise Gateway API to retrieve a last used date for a connection

[HaldemanMA]

We manage 100's of Enterprise Gateway connections and have no idea which ones are still used. We can retrieve the connection status through the Get Datasource Status API and delete those with disconnected connections. However for connections that are still connected, we have no way to programmatically determine the last time it was utilized. It is not feasible to individually reach out to that many users on-going, from a governance standpoint. Also, we do not want to delete a connection without backing data.