In Hills Like White Elephants, Hemingway mentions the train comes in 40 minutes and stops for 2 minutes. Is the time factor relevant?

I don't
see the time factor as immediately relevant in terms of the plot.  Yet, I think that it is
significant in terms of what Hemingway sets out to do in the short story.  One of the reasons
why this short story is so powerful is that it really shows an example of Hemingway wanting to
recreate "a moment," an instant in the life of two people.  He does this with a
recreation of everything, a sense that he is the author but also one that prevents him from
coloring this recreation with his own bias.  He wants to use language to recreate
"everything" about that moment, that instant where...