TK 6015 then CK 228 at O'Hare
Istanbul → Chicago → Shanghai
Timetable, Chicago time
01:30TK 6015 from Istanbul at the gate
04:00CK 228 to Shanghai leaves the gate
2 h 30 apart on the timetable
The last days
TK 6015 and CK 228 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.