I maintained simultaneous control of the handguns we both used. At no time were they in exclusive control or exercise dominion over the arms.
If a gun is in another person's hands, then that person is carrying and is in control. That is like saying someone could shoot someone else and then claim the person they were with who has a LTCH was actually the one who "maintained simultaneous control of the handgun," therefore they can't be charged with a crime. What kind of logic is this? Do we really want to tell people that even if they are firing a handgun, they can relax because they are not in control of the handgun?