TK 6019 then AA 1466 at O'Hare
Istanbul → Chicago → Denver
Timetable, Chicago time
03:15TK 6019 from Istanbul at the gate
15:23AA 1466 to Denver leaves the gate
12 h 08 apart on the timetable
AA 1466 leaves 12 h 08 after TK 6019 arrives on the timetable: more than half a day, so not a connection we count.