Miller was very circumspect and explained her protection of source rule is if the source has been honest.
It might be my biased imagination that saw Cooper hesitate before agreeing with that.
Chrissy asked several questions Miller simply refused to answer as pertains to the case itself. Cooper did say that the definition of criminality is subjective and he explained the specificity of the law that is ostensibly under investigation and he offered that at the end of the case the only people who may go to jail might be journalists. (the tease!)