A question I don't know the answer to

[Twizz]

Ok the Superbowl is coming. Both Qb's have won a superbowl before. When is the last time this happened? As far as I know It never happened

 

[IronMan]

The last time this happened was Super Bowl XVIII. January 22, 1984, when the Los Angeles Raiders defeated the Washington Redskins 38-9.

Los Angeles' quarterback was Jim Plunkett, who had previously won the Super Bowl XV with the Oakland Raiders.

Joe Theismann had won Super Bowl XVII with the Redskins.