UA 973 then TK 6060 at O'Hare
Brussels → Chicago → Istanbul
Timetable, Chicago time
12:10UA 973 from Brussels at the gate
12:00TK 6060 to Istanbul leaves the gate
23 h 50 apart on the timetable, overnight
TK 6060 leaves 23 h 50 after UA 973 arrives on the timetable: more than half a day, so not a connection we count.