AA 6365 then DL 2646 at O'Hare
Waterloo → Chicago → Boston
Timetable, Chicago time
17:24AA 6365 from Waterloo at the gate
16:40DL 2646 to Boston leaves the gate
23 h 16 apart on the timetable, overnight
DL 2646 leaves 23 h 16 after AA 6365 arrives on the timetable: more than half a day, so not a connection we count.