DL 2919 then WS 8476 at San Francisco
Boston → San Francisco → Detroit
Timetable, San Francisco time
23:58DL 2919 from Boston at the gatealso SK 3585, AF 3726
23:20WS 8476 to Detroit leaves the gate
23 h 22 apart on the timetable, overnight
WS 8476 leaves 23 h 22 after DL 2919 arrives on the timetable: more than half a day, so not a connection we count.