SQ 387 then 8B 999 at Changi
Madrid → Singapore → Jakarta
Timetable, Singapore time
08:25SQ 387 from Madrid at the gate
15:308B 999 to Jakarta leaves the gate
7 h 05 apart on the timetable
The last days
SQ 387 and 8B 999 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.