F9 1407 then DL 2213 at Atlanta
Buffalo → Atlanta → Lexington
Timetable, Atlanta time
10:26F9 1407 from Buffalo at the gate
22:44DL 2213 to Lexington leaves the gate
12 h 18 apart on the timetable
DL 2213 leaves 12 h 18 after F9 1407 arrives on the timetable: more than half a day, so not a connection we count.