DL 33 then DL 2266 at Atlanta
London → Atlanta → Buffalo
Timetable, Atlanta time
13:37DL 33 from London at the gate
12:52DL 2266 to Buffalo leaves the gate
23 h 15 apart on the timetable, overnight
DL 2266 leaves 23 h 15 after DL 33 arrives on the timetable: more than half a day, so not a connection we count.