AA 1618 then CA 1046 at O'Hare
Dallas-Fort Worth → Chicago → Shanghai
Timetable, Chicago time
15:19AA 1618 from Dallas-Fort Worth at the gate
02:15CA 1046 to Shanghai leaves the gate
10 h 56 apart on the timetable, overnight
The last days
AA 1618 and CA 1046 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.