There is nothing special about a RTW ticket vs a normal ticket, so this would be the same length of time as the normal carrier posting as far as I am aware and as I have experienced myself.

QR seems to have been really focused on posting miles ASAP, however BAEC never seems in much of a hurry and it can take up to a week. See here an article that mentions one of the reasons QR posts their miles so quickly - so you can spend them in Doha during your transit! https://www.headforpoints.com/2024/0...ional-airport/

In your scenario with QF, well they are being sent to different programs - I have a feeling some airlines just do a batch of flights to credit once a week or similar, so it may have been coincidence that made them post more quickly. In my experience BAEC is one of the slowest at even posting their own flights.