Infinity with TimeLeap

I'm assuming Infinity works like Combo Attack in that each time the buff changes, it casts a new buff over the old with the remaining duration. If you haven't noticed, each time you gain an orb or use a finisher, the buff moves in the line-up. What Infinity and see if it does something similar. If that's the case, recasting Infinity would just start back at the beginning rather than increasing further.