IB 4893 then SQ 33 at San Francisco
Dallas-Fort Worth → San Francisco → Singapore
Timetable, San Francisco time
22:31IB 4893 from Dallas-Fort Worth at the gate
20:15SQ 33 to Singapore leaves the gate
21 h 44 apart on the timetable, overnight
SQ 33 leaves 21 h 44 after IB 4893 arrives on the timetable: more than half a day, so not a connection we count.