A diving interception off an ill-advised pass set up Notre Dame’s trip to play for the program’s 12th national title after a thrill-a-minute 27-24 victory over Penn State on Thursday night in the semifinal at the Orange Bowl. Fighting Irish defensive back Christian Gray snared Drew Allar’s pass across the middle at the Nittany Lions 42 with 33 seconds left, then the Irish moved 19 yards to set up Mitch Jeter’s 41-yard winner with 7 seconds left. Notre Dame (14-1), seeded seventh in this, the first 12-team college playoff, will have a chance to bring its first title since 1988 back under the Golden Dome with a game Jan. 20 against the winner of Friday night’s Texas-Ohio State semifinal.