AA 5640 then AA 3091 at DFW
Gainesville → Dallas-Fort Worth → Lexington
Timetable, Dallas-Fort Worth time
19:15AA 5640 from Gainesville at the gate
19:00AA 3091 to Lexington leaves the gate
23 h 45 apart on the timetable, overnight
AA 3091 leaves 23 h 45 after AA 5640 arrives on the timetable: more than half a day, so not a connection we count.