SN 3752 then SN 2815 at Brussels
Valencia → Brussels → Prague
Timetable, Brussels time
23:45SN 3752 from Valencia at the gate
20:45SN 2815 to Prague leaves the gate
21 h apart on the timetable, overnight
SN 2815 leaves 21 h after SN 3752 arrives on the timetable: more than half a day, so not a connection we count.