Can a coach touch a base runner?

Can a coach touch a base runner? According to Rule 7.09 (h), it is interference, if in the judgment of the umpire, the base coach at third or first base, by touching or holding the runner, physically assists the runner in returning to, or leaving third or first base is interfering with the runner.

According to Rule 7.09 (h), it is interference, if in the judgment of the umpire, the base coach at third or first base, by touching or holding the runner, physically assists the runner in returning to, or leaving third or first base is interfering with the runner.