As usual Hillary said nothing in House testimony to expose herself to potential perjury charges and further investigation. Undoubtedly she never spoke personally about these things to anyone who would dare betray her. Never spoke on a phone about it or on any electronic media. She isn’t as dumb as Holder. Amazingly.
When the chips are down, it isn't healthy to be too close to that one.
I think they learned a lot about how to plug leaks, and have found prevention is less hard on the hired help, which can be hard to find. She is not bound by constraints that might yield less than fully professional underlings, either.
Holder is a firewall first, and, in extremis, a sacrifice in order to protect the puppet and the puppetmasters. That he has allowed his position to become politicized, and so along racial lines (even) shows he is far from a Janet Reno, who took the heat (what there was) over Waco and was left still standing.