AA 2712 then AA 4063 at DFW
St Louis → Dallas-Fort Worth → Mc Allen
Timetable, Dallas-Fort Worth time
16:55AA 2712 from St Louis at the gate
16:44AA 4063 to Mc Allen leaves the gate
23 h 49 apart on the timetable, overnight
AA 4063 leaves 23 h 49 after AA 2712 arrives on the timetable: more than half a day, so not a connection we count.