TK 6019 then AA 4915 at O'Hare
Istanbul → Chicago → Lexington
Timetable, Chicago time
03:15TK 6019 from Istanbul at the gate
15:49AA 4915 to Lexington leaves the gate
12 h 34 apart on the timetable
AA 4915 leaves 12 h 34 after TK 6019 arrives on the timetable: more than half a day, so not a connection we count.