Actually you can have an interview other than the landing interview if CIC has doubts of your relationship.Inlandoct2014 said:For PR landing in inland application, after you get the DM, you will have an interview which is basically the landing interview
It is more common with outland applicants, but happened a few time with inlanders.
I think it's more common with outland applicants, because they not necessarily live together with their spouse, therefore they don't have so strong proof.