SN 379 then SN 3751 at Brussels
Douala → Brussels → Valencia
Timetable, Brussels time
05:05SN 379 from Douala at the gate
18:20SN 3751 to Valencia leaves the gate
13 h 15 apart on the timetable
SN 3751 leaves 13 h 15 after SN 379 arrives on the timetable: more than half a day, so not a connection we count.