SN 3668 then SN 3751 at Brussels
Toulouse → Brussels → Valencia
Timetable, Brussels time
14:00SN 3668 from Toulouse at the gate
10:30SN 3751 to Valencia leaves the gate
20 h 30 apart on the timetable, overnight
SN 3751 leaves 20 h 30 after SN 3668 arrives on the timetable: more than half a day, so not a connection we count.