It will most likely be prudent to anticipate that SAS will merge the activities of Braathens some time down the line. First will probably be admin (Marketing, Finance, Human Resources etc) followed by handling, engineering and then finally the aircraft and crew. With the shortage of engineers in particular and experienced flight crew in general, redundancies in those departments are probably limited, whereas quite a few BU admin and front-line staff may find themselves being made redundant. It is foolhearted to belive that SAS will not harvest the benefits of their purchase, chief amongst which is the elimination of double functions.
And the ensuing battle between SK and BU staff will probably not be a pretty sight. As long as airlines insist on basing their advancement policy for pilots on seniority rather than performance, merging two airline crews into one is bound to create havoc. And who will win that battle then, the SAS or Braathens fraction of pilots ?