DL 420 then UA 2182 at O'Hare
Savannah → Chicago → Portland (Oregon)
Timetable, Chicago time
13:13DL 420 from Savannah at the gate
12:49UA 2182 to Portland (Oregon) leaves the gate
23 h 36 apart on the timetable, overnight
UA 2182 leaves 23 h 36 after DL 420 arrives on the timetable: more than half a day, so not a connection we count.