The next morning, Oblonsky and Vronsky both arrive at the train station: Oblonsky is there to fetch Anna, and Vronsky is coming to meet his mother.
Although they have met before, the train platform is the first place in the novel where Oblonsky and Vronsky come together.
Vronsky tells Oblonsky that he met Levin and found him somewhat angry and edgy. Oblonsky suggests that his moodiness might be because Levin had just proposed to Kitty, and Vronsky comments offhand that Kitty can do better. Meanwhile, the train arrives.
Levin sees Vronsky as deep competition for Kitty’s hand, but Vronsky does not view the situation with the same sense of dire import. He is concerned about Kitty’s fate, but does not seem intent on marrying her.