AA 642 then UA 2182 at O'Hare
Dallas-Fort Worth → Chicago → Portland (Oregon)
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
12:49UA 2182 to Portland (Oregon) leaves the gate
23 h 39 apart on the timetable, overnight
UA 2182 leaves 23 h 39 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.