AA 2103 then AA 1458 at DFW
St Louis → Dallas-Fort Worth → Oklahoma City
Timetable, Dallas-Fort Worth time
09:33AA 2103 from St Louis at the gate
21:50AA 1458 to Oklahoma City leaves the gate
12 h 17 apart on the timetable
AA 1458 leaves 12 h 17 after AA 2103 arrives on the timetable: more than half a day, so not a connection we count.