when i was checking the Brussels Airport timetable i discovered that SN and LOT are codesharing again from the winterseason
When i checked the SNBA site, only their own flights were shown in their timetable, but when you go to the booking page and ask the price for a flight in November e.g. they you will get 5 daily flights available, of with are 2 operated by SN (as the flightnumber is SN2553-2555) and 3 flights were the flightnumber starts with 5xxx (which is used to be for codeshare flights).
Another surprising fact is that SN and LOT were codesharing in the past.
This is a quote from an SN press release dated 26 February 04.
So after a summerseason where both airlines were operating on their own on this route, they've decided to codeshare again.As of March 28 the code share arrangement with LOT on the Warsaw route will discontinue and SN will fly twice daily with own aircraft.
OO-VEX