AA 5640 then AA 4167 at DFW
Gainesville → Dallas-Fort Worth → Lexington
Timetable, Dallas-Fort Worth time
19:15AA 5640 from Gainesville at the gate
18:55AA 4167 to Lexington leaves the gate
23 h 40 apart on the timetable, overnight
AA 4167 leaves 23 h 40 after AA 5640 arrives on the timetable: more than half a day, so not a connection we count.