DL 1605 then DL 3847 at Detroit
Fort Lauderdale → Detroit → Buffalo
Timetable, Detroit time
15:54DL 1605 from Fort Lauderdale at the gate
14:00DL 3847 to Buffalo leaves the gate
22 h 06 apart on the timetable, overnight
DL 3847 leaves 22 h 06 after DL 1605 arrives on the timetable: more than half a day, so not a connection we count.