I'm talking about the guy @2:30
I asked you if you had tried timing a few steps on stairs yourself
I find that at a casual rate of speed I get 2 steps per second
So, 18 steps per floor x 4 floors is 72 steps = 36 seconds at your casual rate. How much to add for landings at floors 5, 4, 3 and 2? Maybe 3 seconds each? That’s another 12 seconds. Roughly 48 seconds from the time of entry to the stairwell to the door on the second floor.
That just leaves walking 180 feet or so from the SN, hiding the gun and entering the stairwell.
My question relates to 7'6" mark in the video you posted. He enters the stairwell at around 28 seconds. Then he is shown getting to the 4th floor 6 seconds later. Just one of the interesting editing moments from that "documentary".