UA 66 then GG 9723 at O'Hare
Hartford → Chicago → Tokyo Narita
Timetable, Chicago time
14:29UA 66 from Hartford at the gate
10:30GG 9723 to Tokyo Narita leaves the gate
20 h 01 apart on the timetable, overnight
GG 9723 leaves 20 h 01 after UA 66 arrives on the timetable: more than half a day, so not a connection we count.