LA 6139 then DL 335 at San Francisco
Boston → San Francisco → Detroit
Timetable, San Francisco time
23:58LA 6139 from Boston at the gate
22:40DL 335 to Detroit leaves the gatealso WS 8016
22 h 42 apart on the timetable, overnight
DL 335 leaves 22 h 42 after LA 6139 arrives on the timetable: more than half a day, so not a connection we count.