HO 1602 then 3U 6102 at Pudong
Singapore → Shanghai → Xi'an
Timetable, Shanghai time
21:25HO 1602 from Singapore at the gate
21:003U 6102 to Xi'an leaves the gate
23 h 35 apart on the timetable, overnight
3U 6102 leaves 23 h 35 after HO 1602 arrives on the timetable: more than half a day, so not a connection we count.