AA 642 then UA 3483 at O'Hare
Dallas-Fort Worth → Chicago → Providence
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
12:10UA 3483 to Providence leaves the gate
23 h apart on the timetable, overnight
UA 3483 leaves 23 h after AA 642 arrives on the timetable: more than half a day, so not a connection we count.