American Airlines American Airlines Leaves My Family Stranded In Dallas At 1:00am Dallas, Texas

What caused the missed 2nd leg was:

1.) The plane was at a different gate listed on the Dallas Airport flight information monitor. We were at that gate listed incorrectly with time to spare. We were also told in flight  that all connecting flights are delayed also and we would have no problem catching the next leg.

2.) AA gates are spread out over what appears to be miles of airport in Dallas with a train system to navigate it. Dallas looks like nothing more than a connection flight facility with small planes on one side big somewhere else.

3.) Expedia shows more than just connection flights however there were no direct flights on multiple websites with multiple airlines. Thanks anyway, duh.

4.) I could see this happening with using different airlines for the connect but not the same airline.

5.) AA wouldn't even bring my luggage up because "our crew will be going home shortly".

6.) I purchased Flight Protection for this bs. Which is actually not real flight protection.

These problems I'm sure occur on a daily basis. 

AA = Triple FFF

        I don't put up with it but your response is why these problems exist.

If the flight was delayed due to weather, or plane problems, how can  you blame the airlines?
If they decide to hold the 2nd leg of your flight, then they would have to hold the 2nd leg of everybody's flights who were on that plane.

Then all those people on the 2nd leg of the flight would have been delayed for their next leg, if they had one. 

So the airlines chose the best situation of the 2 evils, make several other flights late in arriving because they held the flights for  you, or just let those on the first leg of your flight miss a flight.

AA made the right call.
There are always unavoidable delays when traveling.

If you want to avoid something like this in the future, take a earlier flight, and wait a bit longer at the airport for your 2nd leg, or better yet, fly Non Stop, and pay the extra premium.

Companies like Expedia make their money  by putting you on flights that have several legs , because they are cheaper.