BT 243 then LH 1278 at Frankfurt
Riga → Frankfurt am Main → Athens
Timetable, Frankfurt am Main time
08:55BT 243 from Riga at the gate
08:50LH 1278 to Athens leaves the gate
23 h 55 apart on the timetable, overnight
LH 1278 leaves 23 h 55 after BT 243 arrives on the timetable: more than half a day, so not a connection we count.