WB 700 then IB 598 at Brussels
Kigali → Brussels → Madrid
Timetable, Brussels time
17:00WB 700 from Kigali at the gate
12:10IB 598 to Madrid leaves the gate
19 h 10 apart on the timetable, overnight
IB 598 leaves 19 h 10 after WB 700 arrives on the timetable: more than half a day, so not a connection we count.