Using a rear door (in addition to the front) for entry and exit is unusual but not unheard of. https://thepointsguy.com/news/why-the-american-airlines-shuttle-

Using a rear door (in addition to the front) for entry and exit is unusual but not unheard of. https://thepointsguy.com/news/why-the-american-airlines-shuttle-continues-the-tradition-of-rear-door-deplaning/ https://thepointsguy.com/news/why-the-american-airlines-shut...