FB 437 then LH 3486 at Frankfurt
Sofia → Frankfurt am Main → XHJ
Timetable, Frankfurt am Main time
12:55FB 437 from Sofia at the gate
12:48LH 3486 to XHJ leaves the gate
23 h 53 apart on the timetable, overnight
LH 3486 leaves 23 h 53 after FB 437 arrives on the timetable: more than half a day, so not a connection we count.