Ok thanks for your replies. So if I went SYD-SIN-LHR-JFK-DFW-SYD, then presumably for the SYD-SIN-LHR segments and DFW-SYD it would be double credits, but then I would still get the regular credits for the other 2 segments? E.g. (for flex fare) 60*2 + 80*2 + 50 (on BA) + 40 (on AA) + 100*2 = 570 status credits? Thanks.