The guy who chalked before leaving the table is dead wrong. By lingering at the table after his miss, he is exhibiting poor sportsmanship. He is supposed to leave the table as soon as possible after his miss. If he wants to chalk afterwards, he should keep a piece at his chair.
Here's what you should do: Keep a piece of chalk with you at all times. You should do this anyway, because the chalk can be damp in some places and cause you to miscue.
So the next time you play a player like that and he's lingering at the table chalking after his miss, walk to the table with your own chalk and proceed with your pre shot routine with him still there chalking. In fact, stand right next to him and chalk your cue. That will show him you aren't waiting for him to finish. You are taking your turn with or without him at the table. Remember to take your chalk back to your chair after your turn.
Here's what you should do: Keep a piece of chalk with you at all times. You should do this anyway, because the chalk can be damp in some places and cause you to miscue.
So the next time you play a player like that and he's lingering at the table chalking after his miss, walk to the table with your own chalk and proceed with your pre shot routine with him still there chalking. In fact, stand right next to him and chalk your cue. That will show him you aren't waiting for him to finish. You are taking your turn with or without him at the table. Remember to take your chalk back to your chair after your turn.