F9 3205 then WN 174 at Denver
Houston → Denver → Dallas
Timetable, Denver time
23:22F9 3205 from Houston at the gate
06:30WN 174 to Dallas leaves the gate
7 h 08 apart on the timetable, overnight
The last days
F9 3205 and WN 174 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.