AA 215 then UA 6060 at O'Hare
Cancún → Chicago → Lancaster
Timetable, Chicago time
17:40AA 215 from Cancún at the gate
16:55UA 6060 to Lancaster leaves the gate
23 h 15 apart on the timetable, overnight
UA 6060 leaves 23 h 15 after AA 215 arrives on the timetable: more than half a day, so not a connection we count.