They both have too much on each other. It could turn out to be like mafia families fighting. They will try to keep all outward appearances nicey-nicey, while behind the scenes it’ll be dicey-dicey. Blood in the streets? God only knows how far these people will go....
That's my take on it. I think they'll both protect each other, mainly so they can protect themselves.
The big question in my mind is, is there someone left in the FBI with the spine for trying to see some justice done?