Norman’s total time for the 3 shots is about 5 secs ,  but he spaces them more equally apart over that 5 second duration.

The Z 313 shot has possibly 4 different sounds that occur so close as only 0.5 sec or less:
A. The “boom” from the muzzle of the rifle
B. A “Thud” sound from bullet hitting the head
C. The metallic clang sound a fragment hitting the chrome frame of the wind shield or rearview mirror
D. The sound of the windshield being cracked by a fragment.

Clint Hill, who heard the third shot as he reached the rear of the limo, described the shot as having a metallic sound. That might have been due to the fragment hitting the windshield frame. Because the bullet was traveling faster than the speed of sound, he would have heard that before he heard the muzzle blast.

We all know about JFK reloaded but most documentaries use private proprietary made 3d Maps of Dealey Plaza, not ideal.
SO...if we were go near this, how would we achieve a computer simulation?

Were the windows open in that little building of his? Makes me wonder how clearly he heard the shots.

Does it matter? If the people who took the test didn't wash their faces after firing the shot and still tested negative, why would it matter if Oswald washed his face? If those people tested negative, it is established that a person could fire the Carcano rifle and still test negative which means Oswald's negative paraffin test doesn't prove he hadn't fired the rifle.

 But those 7 people tested positive , so That kind of makes Oswald’s negative result an anomaly . So I’m trying to suggest the possibility Oswald having washed his face at the theater 65 minutes after the shooting and how probable the trace amount of nitrates could be removed from his face by washing with water and soap. If it is improbable , then the anomaly persists.

"These people who say that we ought to withdraw from Vietnam are wholly wrong because if we withdrew from Vietnam the communists would control Vietnam. Pretty soon Thailand, Cambodia, Laos, Malaya would go and all of southeast Asia would be under the control of the communists. Another domination of the Chinese. Then India, Burma would be the next target. So I think we should stay." --- JFK to Walter Cronkite, September 2, 1963.

JFK: "So I think we should stay."

Was JFK lying to the American people about this? Was he going to run on a promise - and the need - of staying and then after re-election withdraw? How could he pull that off? With no consequences? If so then the JFK conspiracists are describing one of most duplicitous people ever to be President (up to that point). They don't even seem to realize it.

From what I've read, JFK didn't want to send combat/infantry troops to Vietnam. In fact, he was adamantly against it. But he also didn't want to see it fall to the communists. As he said above, that fall would affect all of southeast Asia. But not intending to send troops is not the same as intending to simply withdraw, to leave unconditionally. Again, as he said above, those advocating withdrawal were "wholly wrong." Not a little wrong, or a lot wrong; but "wholly wrong."

Go to the 14:30 mark to hear the above: