AA 642 then UA 2176 at O'Hare
Dallas-Fort Worth → Chicago → Charlotte Amalie
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
07:40UA 2176 to Charlotte Amalie leaves the gate
18 h 30 apart on the timetable, overnight
UA 2176 leaves 18 h 30 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.