combine two motion clips

I have two motion clips(bvh files) one is walking straight and another walking then take right turn at 90 degree. I want to combine both the clips to make a single clip so that new clip having motion of walking stringht and then right turn. But how can I adjust the translation and rotations of nodes? i.e. what translation and rotation I need to apply on second clip whiles appending it with first clip.
Note - Both the clips have same hierarchy.

If this is for an animation, rather than sweating about getting it all in one shot, cut to a second camera angle for the turn.

If it’s for a game, though, I have no suggestions.