3S 446 then UA 3719 at O'Hare
Frankfurt am Main → Chicago → Detroit
Timetable, Chicago time
23:493S 446 from Frankfurt am Main at the gate
12:47UA 3719 to Detroit leaves the gate
12 h 58 apart on the timetable, overnight
UA 3719 leaves 12 h 58 after 3S 446 arrives on the timetable: more than half a day, so not a connection we count.