Originally Posted by Bowgie

To belabor the point, I think partner "coding" means flight numbers beginning with AF or KL or some other partner two-letter code.

The last time I booked AF-code flights a year ago, I was able to do it on Air France's website. Later, two of the domestic flight numbers changed to DL, and the transatlantic outbound flight changed to Delta-operated (just done for no apparent reason, but it didn't bother me enough to get it changed back). Anyway, the whole trip earned according to the AF partner chart. I think the transatlantic flight coding may determine the earnings for the connections as well.