UA 613 then SY 8188 at Dulles
Lagos → Washington → Detroit
Timetable, Washington time
05:55UA 613 from Lagos at the gate
16:19SY 8188 to Detroit leaves the gate
10 h 24 apart on the timetable
The last days
UA 613 and SY 8188 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.