Theres always the possibility no matter how hard the water,That you might get a bite on both rods when they start to feed.So if you see both floats getting some interest which one you going to hit??
Certainly not all the time , but quite often a feeder will help hook the fish when on bottom so you might get the one on float as well as the one on bottom. But 2 floats not a lot of chance if any of getting them both probably miss them both because of the stress and confusion you've just caused yourself. Take it easy relax ,slouch in ya chair and concentrate on one float enjoy it,thats what it's all about ,chilling out .Don't come home all stressed out and your eyes spinning in your head becuse you've been flicking them back and forth all day.
You cannot concentrate on 2 floats at once unless they are touching each other. Because the Human eyes are not designed to focus on more then one thing at once, You can see 2 but one is always in your peripheral vision.Chill and enjoy.