Is the Emperor Justinian a Catholic or a Meaphysite?

The emperor justinian was trying to unite the meaphysites with the catholicsd in part part of clearing up some confusion about the council of chalcedon. Rome wasn't on board, but it was through this enforcement that justinian took vigilius from rome, sailed him back to constantinople, and had him there until he finally gave way. Vigilius went back and forth with documents that claim the investment of peter's authority. They both claim to be protected in some sense by the authority of peter, but they contradict by the pope's own admission. It almost looks like a, see those guns that shoot out a flag, you know