BTW some training on the Tueller dril is to actually determine the distance without injury, in a safe manner. It is not about becoming a quick draw artist, or pulling a gun without thinking and shooting a innocent. It is to determine the distance one can draw and fire when being charged, which is different for everybody. The best way to find that out is have one person stand with their hand on the should of another. When the instructor says go the runner runs in the opposite direction of the shooter related to the target. When the runner hears the gun shot he stops in his tracks, this is the distance that one can draw a firearm when charged keeping in mind that not all runners will run at the same pace.
This is clearly for those people who will encounter resistance and possible attack by perps, LEO's! LEO's do run into this problem, BUT open carriers do not, and since this is a open carry site it is to push training that first off you are getting wrong, and second that is not necessary.
IOW stop watching TV! It corrupts common sense.
The reason GZ survived his attack was not training, or he would not have gotten into the situation in the first place. It was his will to survive. TM did not survive because he did not take into account he might be shot, and he clearly had more training than GZ did. If TM had known from the start where GZ's gun was, and he was carrying GZ probably would be dead, no matter how much training he had.
Time after time citizens defend themselves without training, and IMO do a better job because they are trying to survive.
I could just see some numpty shooting a marathon runner training because the runner was running towards them, because someone told them to.
This thread and OP's description sounds very much like a TV show, something about myths. I seem to remember a scene from the show on Youtube describing the "training" the OP is prescribing.