I think I've already mentioned about this a while ago:
- when the player plays a chord and in the same bar it is followed by different bass notes, for ex: | C /B /A /G | , could it be possible that the piano (or guitar) don't play on every beat?
There's no need for the piano to break his pattern just because the bass plays some other notes in the same bar while the upper part of the chord remains the same.