Regarding Air Baltic and Lufthansa one should not forget that they have just extended their wet lease agreement with LH Group for another 3 years, (temporary) crew bases at LH bases such as VIE, MUC and BRU were announced. Looking at Air Baltics Summer OPS at DUS for Eurowings I could imagine that might become the 4th base. Lufthansa City has orders for Airbus A220-300 and it shows what LH thinks is the right sized aircraft for their feeder flights and it helps them to get rid of older A319s from their fleet while maintaining the same network and capacity, plus an in-house flexible ACMI operator for the whole group could be a good solution. I can see Air Baltic becoming part of LH Group and given their small own network I don't think the EU would block the transaction.