UA 2231 then TK 6060 at O'Hare
Los Angeles → Chicago → Istanbul
Timetable, Chicago time
12:15UA 2231 from Los Angeles at the gate
12:00TK 6060 to Istanbul leaves the gate
23 h 45 apart on the timetable, overnight
TK 6060 leaves 23 h 45 after UA 2231 arrives on the timetable: more than half a day, so not a connection we count.