AA 1363 then AA 1408 at DFW
St Louis → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
17:21AA 1363 from St Louis at the gate
10:49AA 1408 to Huatulco leaves the gate
17 h 28 apart on the timetable, overnight
AA 1408 leaves 17 h 28 after AA 1363 arrives on the timetable: more than half a day, so not a connection we count.