TK 6023 then UA 5646 at O'Hare
Istanbul → Chicago → Sioux Falls
Timetable, Chicago time
06:25TK 6023 from Istanbul at the gate
19:45UA 5646 to Sioux Falls leaves the gate
13 h 20 apart on the timetable
UA 5646 leaves 13 h 20 after TK 6023 arrives on the timetable: more than half a day, so not a connection we count.