FYI: Just talked to EuroBonus to rebook a trip as the flights were cancelled by NH. Tried to rebook to BKK for Q1 2021 but SK EuroBonus cannot sell any tickets for TG Business or F unless 10 days out and no tickets at all on SQ at the moment. All other Star Alliance partners can be booked in all classes with the usual constraints, e.g. LH F only 10 days out.