Time Trial Umbilical Cords

What ever became of those cords which the Italians started using around 1990, to attach their torsos to the stem of their bikes using a wire harness? I remember it being a controversial enhancement to performance in time trials. Banned I suppose. Was designed to give added leverage, but when you think about it, clip-on TT bars sort of do the same thing.. Instead of having one point of contact (hands only) the aero bars give you two (hands and forearms), hence the leverage. As one who has never used such TT bars, please forgive my ignorance. I am not a good time trialist, but that could change. Did the Bob Beal TT last year with no aero enhancements whatsoever, got a shit time of 7:12. This year I might use a set of clip-ons, wear a skinsuit and maybe borrow a rear disk. Maybe not. Getting a shit time is one thing, getting a shit time with all the aero toys, is another.