UA 1886 then DL 1632 at Houston
San Francisco → Houston → Detroit
Timetable, Houston time
05:41UA 1886 from San Francisco at the gate
11:35DL 1632 to Detroit leaves the gate
5 h 54 apart on the timetable
The last days
UA 1886 and DL 1632 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.