AA 642 then UA 606 at O'Hare
Dallas-Fort Worth → Chicago → Newark
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
11:56UA 606 to Newark leaves the gate
22 h 46 apart on the timetable, overnight
UA 606 leaves 22 h 46 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.