Hi folks.
For all cheap fare finders to SIN or MCT on LX this information (found in a LX-document) might be useful:

"On the flights LX242/243 (ZRH-DXB-MCT v.v.) and LX182/183 (ZRH-BKK-SIN v.v.) there are passengers travelling with separate issued tickets for the through connection.
It seems that sometimes buying separate tickets is cheaper than one ticket with a through fare.
As these are illegal connections in BKK and DXB the needed minimum connecting time is not granted.
Therefore passengers with such tickets will not be accepted at check-in and have to contact the ATO or service center and the ticket has to be reissued at the through fare.
This is valid for passengers with or without checked in baggage."