The cue ball cannot affect the object ball once it has moved away until they clash again at some other time. What happens to it after it has run away is just the story of what happens to it after the cue ball has caused it to move. This suggests that the causation between the cue ball and object ball occurs at the time that they are touching, where momentum is being passed from one to the other.
Interesting take. That means maths equations are correct reflection?
