it was exciting and a bit overwhelming! he's very method on set, likes to stay focused that way, but when they're off set, he would be his regular, less-than-serious self. people expect him to be a lot more serious because of his preferred way of acting and he can come off a bit intimidating, but he would have warned costars and those he works with beforehand so they're not taken by surprise. when he's devoted to a project, he considers everyone on that project an extension of his family given the amount of time they all spend together. so i'm sure they would have bonded really well during inherent vice filming. as for montana, he's not typically always on set as a producer if his schedule doesn't allow him to be, but wildlife filmed at the perfect time for him, so he was available and there. that could have furthered their friendship!