Claude Julien is an old hat at the outdoor hockey spectacle at the NHL level. The Bruins coach was the Habs bench boss when they took part in the very first Heritage Classic with the Edmonton Oilers back in 2003, and, of course, was coaching the Black and Gold when they defeated the Philadelphia Flyers in overtime at the 2010 Winter Classic at Fenway Park. Who could ever forget the image of Julien in the fedora and old school letterman jacket behind the Bruins bench as Marco Sturm celebrated his overtime game-winner? Despite the warm hockey memories from those very chilly days, the B’s coach was very mixed on the prospect of the Bruins once again getting involved in the Winter Classic in the near future. “It was exciting. I did the first one with Montreal in Edmonton, and this one here [in Boston] at Fenway,” said Julien, while watching on TV as the Maple Leafs defeated the Red Wings in snow globe conditions in Ann Arbor, Mich., on Tuesday. “I’m willing to share with others, and let others have the opportunity to do it if that answers your question.