For OW marketed and operated flights (e.g. AA codeshare operated by BA) yes. There may be limits if the flights is marketed by an OW partner airline (i.e. not your FFP's airline) but operated by a non-OW partner airline (E.g. You want to credit to BAEC. A flight marketed by Iberia but operated by Alitalia will not earn any Avios or TP, whereas a flight marketed by British Airways but operated by Alitalia will earn avios and TP with BAEC).