WN 752 then WN 4740 at Denver
Cleveland → Denver → Ontario
Timetable, Denver time
15:15WN 752 from Cleveland at the gate
19:40WN 4740 to Ontario leaves the gate
4 h 25 apart on the timetable
The last days
WN 752 and WN 4740 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.