In 1943 Lynn played 1 game for the New York Rangers. In 1944, he fell in with the Detroit Red Wings' organization but failed to impress the team's brass. As such, Lynn was sent to play for the Indianapolis Capitals of the AHL. In Toronto, Lynn joined Howie Meeker and Ted Kennedy to form "The K-L-M Line." The trio clicked for three seasons of successful hockey with Stanley Cup victories in 1947, 1948, and 1949.