LH 803 then BJ 247 at Frankfurt
Stockholm → Frankfurt am Main → Tunis
Timetable, Frankfurt am Main time
14:55LH 803 from Stockholm at the gate
11:35BJ 247 to Tunis leaves the gate
20 h 40 apart on the timetable, overnight
BJ 247 leaves 20 h 40 after LH 803 arrives on the timetable: more than half a day, so not a connection we count.