check these kitaabs for the shaf’i view on this.

If one is in both a state of minor and major ritual impurity, then a ghusl suffices to lift both.
It should be noted that, if one’s ablution is nullified (like by touching the private parts) while making ghusl, then he may complete the ghusl (it is valid). However, one must still perform ablution afterwards.

also if one were to be swimming in a lake or natural water pool & he covers his whole body in the water & makes the niyyah for wudhu then tarteeb is not necessary because the whole body is being washed at the same time.