DL 5697 then UA 2229 at Boston
Richmond → Boston → Chicago O'Hare
Timetable, Boston time
08:00DL 5697 from Richmond at the gate
20:25UA 2229 to Chicago O'Hare leaves the gate
12 h 25 apart on the timetable
UA 2229 leaves 12 h 25 after DL 5697 arrives on the timetable: more than half a day, so not a connection we count.