AA 1973 then AA 1408 at DFW
Calgary → Dallas-Fort Worth → Huatulco
Timetable, Dallas-Fort Worth time
17:47AA 1973 from Calgary at the gate
10:23AA 1408 to Huatulco leaves the gate
16 h 36 apart on the timetable, overnight
AA 1408 leaves 16 h 36 after AA 1973 arrives on the timetable: more than half a day, so not a connection we count.