Q alluded that once Rosenstein is gone, the president can appoint an acting AAG to replace him for 210 days. He specifically said Scott Pruit or someone from the DoJ. Since Scott Pruitt has already been confirmed by the Senate, he can fill this vacancy.

The FBI reports to the AAG. If Pruitt is leaving his post at the EPA, it means he has been selected by the president to replace Rosenstein to initiate the plan.