TK 6039 then UA 2752 at O'Hare
Istanbul → Chicago → Pittsburgh
Timetable, Chicago time
20:28TK 6039 from Istanbul at the gate
10:25UA 2752 to Pittsburgh leaves the gate
13 h 57 apart on the timetable, overnight
UA 2752 leaves 13 h 57 after TK 6039 arrives on the timetable: more than half a day, so not a connection we count.