The animation has a lot of stopping and starting unfortunately, so there's no easy way to determine when it will end 
and therefore i can't put a timer on the button appearing because it might pop up to early or to late.
If it was to early, this would likely prompt the user to click it as they would think they were supposed to (more likely than not) and they would miss the rest of the animation they are supposed to be following through.
thanks tho, least your trying 