Double Boxes

I've been seeing double boxes used a lot lately and here's something I've noticed. A lot of the double boxes have a "live" bug on them, but they're not specific to either box. So for example, on that plane crash the other week in New York, you'd see a liveshot of the plane in one box and video in the other. Sometimes in these situations, it's hard to tell which box is live and which one is taped. It might make some sense to have a conversation with your graphics people to see if two versions can be made up--- or if you can font "live" hot over the appropriate box.