Yes it generally takes 2-3 days from when the eligible flights/TP's post for the account to be updated.
I figure that account takes a couple of days to update to the next tier, its that the TPs and Avios have posted but the flights have not updated the eligible flight count. Hence my confusion. Is it a couple of days for the eligible flights to be added to the tally or should this be updated with the TPs and Avios. Are you saying that the eligible flights will register in a couple of days and then another couple of days to update status?
I guess what I am asking is, is it possible for TPs and Avios to be credited but the flights not to be recognised as eligible at the same time?