Regarding #1..The B/R may continue running the bases after a walk, just the same as if he hit the ball. Runner on 3B may attempt to advance as soon as the ball has reached the batter. If he doesn't leave the base, and the ball is returned to the pitcher, he may attempt to advance as soon as the pitcher makes a play on the B/R.
#2..Time may be granted by the umpire anytime the action has ceased. However, time should not be called just to allow an infielder to return the ball to the pitcher.
bob
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