Day 4: 11:00 A.M.-12:00 P.M. - S4-E5
Plot hole: Jack's CTU-car arrives only 1 min 20 seconds later after he has asked for it. Remember the time he needed from the store to the roadblock in the previous episode. The CTU-car has to be K.I.T.T. with a enormous turbo boost. (00:04:20 - 00:05:40)
Day 4: 6:00 P.M.-7:00 P.M. - S4-E12
Plot hole: When Conlon searches for Paul in the dark he holds his gun and the flashlight in his crossed hands. You can see how the light of the flashlight brightens the side of the gun. But the cone of light on the wall is a full round circle. (00:37:55)
Day 4: 9:00 P.M.-10:00 P.M. - S4-E15
Plot hole: Dina Araz was executed at 8:57pmin the previous episode. At 9:01pm during this episode, the terrorists have already placed her body in the van, driven off with it, and abandoned it. Then someone had found the body, reported it in, and the information gotten to CTU. All in the course of four minutes. That is impossible, no matter how fast the terrorists were.
Day 4: 1:00 A.M.-2:00 A.M. - S4-E19
Plot hole: At 01:50 am, Chloe is told to go to Sabir's house. She arrives there approximately 5 minutes later, at 01:55:45. At 01:58, Jack is told that the closest tactical team is 15 minutes away from Sabir's residence. A few moments later, Jack mentions that the tactical team is 10 minutes apart from Chloe, meaning they bothered to send the team over there even though any officer currently at CTU HQ, including Jack, could get over there a lot sooner.
Chosen answer: Nobody knew, not even the writers, until at least halfway through the season when they were writing the end. They wanted to keep all options open.
Nick N.