DL 2377 then 7L 4871 at O'Hare
Salt Lake City → Chicago → Houston
Timetable, Chicago time
18:05DL 2377 from Salt Lake City at the gate
20:307L 4871 to Houston leaves the gate
2 h 25 apart on the timetable
The last days
DL 2377 and 7L 4871 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.