TK 6037 then UA 5624 at O'Hare
Istanbul → Chicago → Lexington
Timetable, Chicago time
05:05TK 6037 from Istanbul at the gate
17:55UA 5624 to Lexington leaves the gate
12 h 50 apart on the timetable
UA 5624 leaves 12 h 50 after TK 6037 arrives on the timetable: more than half a day, so not a connection we count.