When is in-game coaching legal?

[scochar]

@chesh

3. Coaching
   Coaching of any player while he or she is at a machine is not allowed and may lead to sanctions, such as removing the coach from the area, voiding the player’s game in progress, or issuing a yellow or red card. Spectators and other players must refrain from commenting on play in a way that affects the current game.

Wouldn’t the ‘spectators’ line preclude telling other players about how to play the game since it would affect the current game, regardless of where the telling takes place?