AA 1973 then AA 6238 at DFW
Calgary → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
17:47AA 1973 from Calgary at the gate
08:25AA 6238 to Amarillo leaves the gate
14 h 38 apart on the timetable, overnight
AA 6238 leaves 14 h 38 after AA 1973 arrives on the timetable: more than half a day, so not a connection we count.