When we were on our return leg from Miami last year, I had scheduled only layovers of an average of 30 minutes. American left the gate of our second leg 40 minutes late which meant we missed our connection in Dallas. We had a layover of 4 1/2 hours and a piece of my luggage was missing on top of it. Since we are at their mercy, there really isn't much we can do except fight with our pocletbooks and not use them. That is why I usually cruise out of my backyard in Galveston.