connect object

I have some problems with the connect object
i have a short animation of a man with a gun.
He takes two steps, then I want to animate the arm (to shoot).
But when the man walks, the gun stops.
The connect object does not offer a solution, at least I cannot get it workable.
I hope you can help me.
Thank you in advance.

https://www.dropbox.com/s/wx53mkko4cnjnm9/Man animatie.c4d?dl=0