A door could only be left ajar if it had been deliberately positioned that way with a door stopper.
Further, as a second DailyMail.com video shows, officer Guyger could not have used her key to force open the door of Jean, whose funeral was held today, despite claiming to have done so in her statement to Texas Rangers.
At the very least, she would have been warned that she was at the wrong door because the unique electronically coded keys used in the South Side Flats building flash red if inserted in the wrong door.
The neighbor, who lives two doors down from cop Amber Guyger, 30, but asked not to be named, said he did not believe the petite blonde would have been able to force her way in.
Pointing to his own heavy metal door, the same as both Jean's and Guyger's, he said: 'These are fire doors. You can't really leave it open.
'The key situation too – you can't get into any place, you can't. It's impossible. You can put it in but you can't open it.
'You can put it into somebody else's key hole but you can't open anything. This key isn't programmed for my door – if I put it in, nothing happens apart from this red light.'