Creative Speculation

I only repeat myself at your insistence.

"Did she cross 150 feet of storeroom floor and get down 4 flights of stairs in less than 45 seconds?"

Adams and Styles were on the fourth floor and needed to travel 3 flights of stairs to be on the ground floor. Whether this would present a timing challenge against other features of this scenario, such as the presence of Truly and Baker, could have been cleared up if the Warren Commission - as Adams requested - did similar timing tests as they conducted for the alleged fleeing gunman and officer Baker. The Warren Commission refused to do these.

However, you inadvertently raise the issue of the timing in relation to the alleged fleeing gunman, who is the one who had to cross 150 feet or more of warehouse floor amidst stacks of boxes, carefully hide his rifle, travel four flights of stairs, and get inside the lunch room (and have a pneumatic door close behind him), which is a much more compressed time period relative to supposed actions. What's that about likely or unlikely?