Remember OIG been on it a while, working along side Huber. Same thing with Durham now. Grand Juries been impaneled for a long time.
You do know that nobody in Justice has to interview the perp of a crime if the evidence is sufficient to take to a grand jury. You know about all those sealed indictments.
How many of those indicted were interview.before their indictments? How many even know they were indicted by a grand jury?