A man with a blue, collared shirt sits in front of another man.
a man is looking at his friend
Just because a man is sitting in front of another man does not mean that he is looking at the other man nor doe sit infer that they are friends.
When a man sits in front of another person it does not imply that the man is his friend.
Just because the man was sitting in front of the other man it doesn't mean he was looking at him or that it was his friend.