AA 128 then AA 1408 at DFW
Shanghai → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
18:20AA 128 from Shanghai at the gate
10:23AA 1408 to Huatulco leaves the gate
16 h 03 apart on the timetable, overnight
AA 1408 leaves 16 h 03 after AA 128 arrives on the timetable: more than half a day, so not a connection we count.