The man in the black shirt is showing the man in the orange shirt something that he has for sale.
A man is being served a dish in a restaurant.
The man can't be showing something to someone at the same time as being served something.
A man showing anther man something he has for sale can not be being served a dish in a restaurant.
The man showing something he has for sale to another man could not have been serving him a dish in a restaurant.