DL 1407 then DL 3900 at Detroit
Raleigh-Durham → Detroit → South Bend
Timetable, Detroit time
20:48DL 1407 from Raleigh-Durham at the gate
19:45DL 3900 to South Bend leaves the gate
22 h 57 apart on the timetable, overnight
DL 3900 leaves 22 h 57 after DL 1407 arrives on the timetable: more than half a day, so not a connection we count.