CZ 435 then UA 5813 at O'Hare
Anchorage → Chicago → Lexington
Timetable, Chicago time
15:58CZ 435 from Anchorage at the gate
07:40UA 5813 to Lexington leaves the gate
15 h 42 apart on the timetable, overnight
UA 5813 leaves 15 h 42 after CZ 435 arrives on the timetable: more than half a day, so not a connection we count.