From Point A to Point B

A passing patrol came upon Kirk von Ackermann's abandonned vehicle within a very short time of a satellite call for help to an Iraqi employee - in theory, it means the patrol was following von Ackermann for part of the route between Tikrit and Kirkuk. I keep wondering if there were points along the way that the two might have been visible to each other?

I'm also wondering...how much time did it take the passing patrol to drive from von Ackermann's vehicle to the check point? Did CID ever actually measure that distance and time exactly how long it took to drive from point A to point B?

Did CID ever attempt a re-enactment of the journey of the two vehicles?