AA 9909 then AA 420 at Denver
Los Angeles → Denver → Dallas-Fort Worth
Timetable, Denver time
16:45AA 9909 from Los Angeles at the gate
15:08AA 420 to Dallas-Fort Worth leaves the gate
22 h 23 apart on the timetable, overnight
AA 420 leaves 22 h 23 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.