DL 1716 then UA 1341 at Detroit
Chicago O'Hare → Detroit → San Francisco
Timetable, Detroit time
17:06DL 1716 from Chicago O'Hare at the gate
17:05UA 1341 to San Francisco leaves the gate
23 h 59 apart on the timetable, overnight
UA 1341 leaves 23 h 59 after DL 1716 arrives on the timetable: more than half a day, so not a connection we count.