7L 1312 then UA 5813 at O'Hare
Anchorage → Chicago → Lexington
Timetable, Chicago time
10:157L 1312 from Anchorage at the gate
07:40UA 5813 to Lexington leaves the gate
21 h 25 apart on the timetable, overnight
UA 5813 leaves 21 h 25 after 7L 1312 arrives on the timetable: more than half a day, so not a connection we count.