DL 441 then DL 2266 at Atlanta
Dallas → Atlanta → Buffalo
Timetable, Atlanta time
13:28DL 441 from Dallas at the gate
12:52DL 2266 to Buffalo leaves the gate
23 h 24 apart on the timetable, overnight
DL 2266 leaves 23 h 24 after DL 441 arrives on the timetable: more than half a day, so not a connection we count.