Going back to the topic. A shot landing near Tague, fired by LHO would have been wildly inaccurate, marked in red in the photo. The only time frame he would have been able to fire a reasonable shot would have been late in the Z film when the limo was well past the Ft. Worth sign.
On the other hand, a line of sight from the fire escape area of the Dal-Tex to the limo (in black), is easily easily seen for the timing of all shots suspected by the readers.