End of the 1st half - clarified

For those of you who attended the game on Saturday, allow me to clarify what happened with the clock during the last 20 seconds of the 1st half.

• Iowa pass near the sideline; the receiver appears to get out of bounds. The whistle blows with about 30+ seconds remaining. An official (SJ?) winds his arm to keep the clock rolling - indicating that forward progress stopped before the sideline.
• With about 20 seconds remaining, the whistle blows again to stop the clock. The officials apparently decide that the receiver DID get out of bounds; the clock should have stopped.
• Confused Iowa spikes the ball just in case
• Iowa spikes the ball again (just in case?)*
• Iowa gets a pass play down inside the 5
• Iowa incomplete pass.
• Iowa FG attempt good.

Props to ESPN for running the game between 3 and 4am this morning.

* I'm not totally sure the first spike even counted as a play.