AA 1820 then AA 1408 at DFW
Ontario → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
15:35AA 1820 from Ontario at the gate
10:49AA 1408 to Huatulco leaves the gate
19 h 14 apart on the timetable, overnight
AA 1408 leaves 19 h 14 after AA 1820 arrives on the timetable: more than half a day, so not a connection we count.