Timing error in NCG

[Nevadaref]

GLENDALE, Ariz. -- Clemson coach Dabo Swinney didn't pull any punches in his disappointment with the officials' performance at the end of the first half -- and he let them know it during halftime.
Swinney berated the officials as they walked down the hallway to the locker rooms with the score against the Alabama Crimson Tide deadlocked at 14-14.
"You made me use a timeout," Swinney screamed multiple times, complaining about the last play sequence that resulted in a blocked Clemson field goal.
The clock was never stopped after Clemson's first down near the end of the half, costing the Tigers the opportunity to run another play.
Clemson's locker room is down the hallway from the officials. An animated and very agitated Swinney walked the entire way complaining to the officials.
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To be fair the clock did stop briefly as the play resulted in a first down, but then was restarted prior to the ball being spotted. My understanding is that the clock was restarted too soon and that the officials should have fixed this.