The audio starts with chapter 0. It's only a minute long, and even at my pathetic proficiency I understood that it was simply introducing the book, with the title, author, translator, speaker. Then chapter 1!
But the audio chapter 1 didn't jive with my physical book. Not even close. I searched around for where the speaker was in the first chapter, to no avail. I went on to chapter 2 and started the audio chapter 2. That wasn't it either. I understood some bit of it ("it was sunny" or something like that). I searched around for where I was and found the spot...several pages into chapter 2. What the heck?
I went back to chapter 1 and went ahead 6 or 7 minutes. I heard the part where Mr. Dursley is asking his wife Petunia if her sister's son's name is Howard. "No, Harry." I found that part in the physical book. Then went back by minutes till I got to the beginning of chapter 1. Yes, chapter 1 started 1 minute and 39 seconds into audio chapter 1. What?
I started audio chapter 1 all over again. Turns out, as far as I could tell, chapter 1 starts with a synopsis of the entire book.* Or, at least up to and including the part where Harry gets the letter inviting him to Hogwarts. I understood that much.
I listened on till 31:00, when chapter 2 in the physical book starts. But the audio chapter 1 still has 11 minutes left. How strange!
Once I got it going, it was easy to follow along. I even understood some of it, mostly because I just read the book in English. Of course, that is the purpose of L-R. After I'm done with listening and reading in Croatian, I start all over but read the book in English while listening in Croatian.
The audio total is a little less than 9 hours. I'll be listening at least 18 hours with the L2-R2 then L2-R1. I really should go through the audio four times so that'll be about 35 hours. Really looking forward to taking the ODA again after. Will my proficiency go up?
*See my comment below!