The traditional classroom setting can’t even begin to compare to the experience of studying abroad. It just isn’t the same. It doesn’t matter how much time you put into learning a language. What matters is what you get out of it and this is where immersion comes to play.
It is said that it takes 10,000 hours to master something so with that being said, by studying a language for an hour every day for five years you would have obtained 1,825 hours of knowledge. It would take you almost 28 years to master something that you can learn within a month of immersion.