LF 8443 then UA 1555 at O'Hare
MQY → Chicago → Oklahoma City
Timetable, Chicago time
09:24LF 8443 from MQY at the gate
21:25UA 1555 to Oklahoma City leaves the gate
12 h 01 apart on the timetable
UA 1555 leaves 12 h 01 after LF 8443 arrives on the timetable: more than half a day, so not a connection we count.