I've just accepted that the world of Hannibal is as magic-realism-ish as Pushing Daisies. Just as beautiful but slightly less technicolored. Hannibal is a man born with the power of murderous art, but is alone, misunderstood, unloved. Only Will can see through the veil of mystery to the twisted genius that stands behind it.
Well, that an an army of electric carts and maybe some robotic oompa loompas. Hannibal is basically the Master Imagineer of Sociopathic Disney. Between keeping Miriam as a pet for a few years and moving that tree, the man is a marvel of bending time and space.
I refuse to recognize that if Jack or any other FBI agent had thought for perhaps as long as 5 seconds they would have recognized that Chilton was physically and mentally incapable of Hannibal's magic feats.