UA 2000 then DL 2570 at O'Hare
Minneapolis → Chicago → Boston
Timetable, Chicago time
11:29UA 2000 from Minneapolis at the gate
10:35DL 2570 to Boston leaves the gate
23 h 06 apart on the timetable, overnight
DL 2570 leaves 23 h 06 after UA 2000 arrives on the timetable: more than half a day, so not a connection we count.