TK 6019 then UA 3459 at O'Hare
Istanbul → Chicago → Harrisburg
Timetable, Chicago time
03:15TK 6019 from Istanbul at the gate
15:55UA 3459 to Harrisburg leaves the gate
12 h 40 apart on the timetable
UA 3459 leaves 12 h 40 after TK 6019 arrives on the timetable: more than half a day, so not a connection we count.