Audio problem: Near the end when Alex is talking to his brother on Valentine's Day, the overdubbed audio says the date is 2006 and not 2004, like Keanu originally said. His lips say 2004, which shouldn't have been overdubbed since Alex passed two years prior. (01:28:35)
Audio problem: Alexis confirms in a conversation with his brother that it's Valentine's day 2006, but if you watch his lips he says 2004.
Answer: The movie is not about them trying to find ways to meet. They are not trying that hard to meet and the time distance is a metaphor. I think the movie misses the tension that she is trepidatious about meeting and he is trying to respect that. He gets killed the first time for trying to force it! This shows when the stack of letters is piling away. She is worried he is a coward who will not be able to handle real romance. This is shown in his retreat to build mass produced houses and has something to do with his mom/dad. She's the doctor, he's the architect: she saves people for a living and is hung up about her own father's death. It's only when it's life or death that she gets over it and he also figures himself out and stops trying to fix everything.