It was manipulated. The Mack test looked like some guy who was walking to the store to get some beer...not a guy on the run. Macks test guy was not walking any 4+ miles an hour!
At a pace of 3 miles an hour which is a pretty 'brisk' pace...do the math--- It would take 20 minutes to walk a mile. The very shortest route from the sidewalk by the rooming house to the Tippit scene is at least .85 miles .85X 20=17 minutes. I took that route and it took me 18 minutes...jay-walking the cross streets... After resting on the way back...it took 16 minutes. Why the difference? I didn't know for a long time but the journey south is ever so slightly uphill away from the Trinity River direction.
Now of course this was back some time ago but I did a lot of walking in my day. I am a retired land surveyor.
I am not sure what the point is you are trying to make, Jerry.
Manipulated or not, even the 11 minutes in Gary Mack's time trial wouldn't have been enough to get him to 10th/Patton on time to shoot Tippit. Even if you accept the official narrative's time of the shooting of 1.14, that still would require the killer to be at the scene no later than 1.11, as prior to the shooting he was seen walking up and down the street, being stopped by Tippit and talking to him through the passenger door window.
In other words, even if Oswald could have walked the distance in 11 minutes, he would have needed to leave the rooming house at 1.00 pm, but that's when Earlene Roberts said he came in.
Anybody who does the math, will find it simply does not add up.