This is a pretty interesting story from an article in The Athletic about the chaos of play calling. According to Ricky Rahne,
"Big Ten Championship Game, 2016. We’re playing Wisconsin and we’re losing but we’re coming back. Coach (Joe) Moorhead, who did such an awesome job in that game, he calls a play that — he miscalls a play. We literally ran a play that we’d never run — in practice, in anything. We’d never run it. We had no idea. But we had a pretty good system and we had obviously great players and Trace (McSorley) just kind of drops back and throws a touchdown — throws the game-winning touchdown pass to Saquon (Barkley) on a play that was miscalled and we were all panicking.
I remember Joe being like, “Oh, they’ll figure it out. They know what to do.” And they did. He was right."
"Big Ten Championship Game, 2016. We’re playing Wisconsin and we’re losing but we’re coming back. Coach (Joe) Moorhead, who did such an awesome job in that game, he calls a play that — he miscalls a play. We literally ran a play that we’d never run — in practice, in anything. We’d never run it. We had no idea. But we had a pretty good system and we had obviously great players and Trace (McSorley) just kind of drops back and throws a touchdown — throws the game-winning touchdown pass to Saquon (Barkley) on a play that was miscalled and we were all panicking.
I remember Joe being like, “Oh, they’ll figure it out. They know what to do.” And they did. He was right."