F9 4937 then DL 1718 at Detroit
Raleigh-Durham → Detroit → Houston
Timetable, Detroit time
17:59F9 4937 from Raleigh-Durham at the gate
16:35DL 1718 to Houston leaves the gate
22 h 36 apart on the timetable, overnight
DL 1718 leaves 22 h 36 after F9 4937 arrives on the timetable: more than half a day, so not a connection we count.