SN 3698 then SN 3751 at Brussels
Barcelona → Brussels → Valencia
Timetable, Brussels time
14:30SN 3698 from Barcelona at the gate
10:30SN 3751 to Valencia leaves the gate
20 h apart on the timetable, overnight
SN 3751 leaves 20 h after SN 3698 arrives on the timetable: more than half a day, so not a connection we count.