F9 2211 then WN 1749 at Denver
Detroit → Denver → Dallas
Timetable, Denver time
08:30F9 2211 from Detroit at the gate
06:05WN 1749 to Dallas leaves the gate
21 h 35 apart on the timetable, overnight
WN 1749 leaves 21 h 35 after F9 2211 arrives on the timetable: more than half a day, so not a connection we count.