I took my last flight as pax with AA in 2006. Just before pushback on schedule we were told that we had to load some "Very important paperwork" as cargo. Cargo already loaded had to be moved from one hold to another. Delay, about 45 minutes. Obviously the paperwork was more important to AA than pax connections, pax time or anything else for that matter. I told the captain on exit that he had the privilege of being the last AA employee to ever look me in the eye. Delay for transplant organs or some such, OK. Paperwork, to hell with them!
After an excellent landing you can use the airplane again!