Christopher Nolan takes viewers behind the scenes of the intimate process of putting together an Imax film in a ‘ 60 Minutes ‘ interview about “ The Odyssey .” In one of two clips exclusively obtained by Variety , Nolan says to “60 Minutes” correspondent Scott Pelley, “In taking on ‘The Odyssey,’ it does become about scale. It needed to be the biggest film that we had done. It needed to be challenging to all of us, because that’s the nature of the story.” “Looks like you nearly drowned Matt Damon,” Pelley says upon seeing a clip of Damon as Odysseus commanding a ship through stormy waters. Laughing, Nolan replies, “We certainly put him through his paces.” In a separate interview, Damon concurs: “It was the hardest movie I’ve ever done by far.…