UA 335 then DL 3889 at Detroit
San Francisco → Detroit → Omaha
Timetable, Detroit time
16:06UA 335 from San Francisco at the gate
16:00DL 3889 to Omaha leaves the gate
23 h 54 apart on the timetable, overnight
DL 3889 leaves 23 h 54 after UA 335 arrives on the timetable: more than half a day, so not a connection we count.