UA 2661 then UA 1267 at San Francisco
Philadelphia → San Francisco → Detroit
Timetable, San Francisco time
09:22UA 2661 from Philadelphia at the gatealso NH 7021, CA 7299, VA 8451, NZ 9365
23:00UA 1267 to Detroit leaves the gate
13 h 38 apart on the timetable
UA 1267 leaves 13 h 38 after UA 2661 arrives on the timetable: more than half a day, so not a connection we count.