SN 2612 then SN 3713 at Brussels
Frankfurt am Main → Brussels → Bilbao
Timetable, Brussels time
13:35SN 2612 from Frankfurt am Main at the gate
10:55SN 3713 to Bilbao leaves the gate
21 h 20 apart on the timetable, overnight
SN 3713 leaves 21 h 20 after SN 2612 arrives on the timetable: more than half a day, so not a connection we count.