AA 3405 then AA 4543 at O'Hare
Syracuse → Chicago → Indianapolis
Timetable, Chicago time
20:18AA 3405 from Syracuse at the gate
06:43AA 4543 to Indianapolis leaves the gate
10 h 25 apart on the timetable, overnight
The last days
AA 3405 and AA 4543 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.