This is false: it has a very negative connotation.
It refers to a smile that is mocking or contemptuous (or a remark that is mocking or contemptuos) - so it's not a genuine smile, but an ironic and sarcastic smile. It has a negative and not a neutral connotation.
False only beginning ans summary? i think
Perhaps he meant that they both understood what the other character or thing was saying, without saying a word
Someone who guides tours, is in charge of the specific position at all times
