How are the two scenes different and similar at the same time?

The director builds two scenes in which the main characters are separate and distinct, but supports them in the projection.
The first scene shows Can, the man, who enters his yacht and finds a gift wrapped in elegant purple paper, discards him and abandons himself to his thoughts, while the gift wrapping falls into the water.
The second scene depicts Sanem, the girl, seated near the port intent on staring at the dark horizon, as if she were far from the present and concentrated only in her thoughts. After taking the last tablet from the bottle, she takes a piece of paper out of the bag where she writes a message, and after closing it in the bottle she throws it into the sea.

The scenes therefore have some differences, such as the place in which they are set (he on a yacht, she near the port), and this could represent the different social status to which they belong.
Despite these differences, however, they are also very similar, the director in fact narrates them in a parallel way alternating them.
Both are lonely in the night and totally absorbed in their thoughts.
They have a deep sense of loneliness on their faces and they seems to be missing someone.
The director builds the scenes at night because it is the moment of the day in which each of us finds himself reflecting with himself, the moment in which we are alone and many times a great sense of sadness and loneliness assails us.
So the director wants to connote them as two people wrapped in a great loneliness.
Both have an object in their hands which then falls into the water.
To him falls the paper in which the book was wrapped, she throws the bottle into the sea.
In this case the director wants to compare their mood to the two objects.
The man's object falls involuntarily and gently into the wind, as if to compare the feelings he has towards the girl: he falls hopelessly in love with it, but being afraid of his emotions he remains in his solitude.
Instead, the girl hurls the bottle into the sea with desolation as if to be resigned and hopes for something that she does not believe totally possible.