SP for me and SOWP for her. I received medical request letter, two months later I got PPT, and that same day she got medical request letter. One month later she got PPR.
It's a particular case. As I mentioned, it varies for everyone. I even read a case of someone that was applying with her husband and one kid, and the kid got PPR before both parents did. If one of the family gets approval, it's most likely that the rest will.