DL 9941 then DL 2266 at Atlanta
Queretaro → Atlanta → Buffalo
Timetable, Atlanta time
19:43DL 9941 from Queretaro at the gate
14:10DL 2266 to Buffalo leaves the gate
18 h 27 apart on the timetable, overnight
DL 2266 leaves 18 h 27 after DL 9941 arrives on the timetable: more than half a day, so not a connection we count.