AA 5549 then AA 1710 at DFW
Lexington → Dallas-Fort Worth → Pittsburgh
Timetable, Dallas-Fort Worth time
13:48AA 5549 from Lexington at the gate
13:14AA 1710 to Pittsburgh leaves the gate
23 h 26 apart on the timetable, overnight
AA 1710 leaves 23 h 26 after AA 5549 arrives on the timetable: more than half a day, so not a connection we count.