IB 924 then FR 572 at Madrid
Dakar → Madrid → Porto
Timetable, Madrid time
17:10IB 924 from Dakar at the gate
16:40FR 572 to Porto leaves the gate
23 h 30 apart on the timetable, overnight
FR 572 leaves 23 h 30 after IB 924 arrives on the timetable: more than half a day, so not a connection we count.