4Y 531 then LH 780 at Frankfurt
Ibiza → Frankfurt am Main → Singapore
Timetable, Frankfurt am Main time
22:104Y 531 from Ibiza at the gate
21:40LH 780 to Singapore leaves the gate
23 h 30 apart on the timetable, overnight
LH 780 leaves 23 h 30 after 4Y 531 arrives on the timetable: more than half a day, so not a connection we count.