Originally Posted by
exwannabe
I have never had any issues using BR miles on BR (unlike my home town airline).
It is a general rule though that you should expect it to be easier to use miles on the airlines' own metal, so it might not be as easy to use BR miles on SQ.
Also, check the SQ earnings table and make certain you will get full miles for the flight flown.
It's because BR doesn't release all of its inventory to STAR partners.