Originally Posted by Mwenenzi

No. And the bonus due to status can change.
Also distance based vs spend base is another variation.
https://www.britishairways.com/en-gb...-avios/flights
Look as AA vs AS

*ONE* are A D or L fare class.
https://www.wheretocredit.com/qatar-airways/d

But for example with QF E fare basis (a very low cost fare bucket) only credits to QF. Does catch some BAEC flyers in Australia
https://www.wheretocredit.com/qantas...oogle_vignette

With OW earnings are based on marketing carrier (flight number) with an eligible operating carrier.