FR 5483 then IB 1331 at Madrid
Porto → Madrid → Frankfurt am Main
Timetable, Madrid time
01:15FR 5483 from Porto at the gate
19:50IB 1331 to Frankfurt am Main leaves the gatealso LA 1646
18 h 35 apart on the timetable
IB 1331 leaves 18 h 35 after FR 5483 arrives on the timetable: more than half a day, so not a connection we count.