If you listen to arabic and persian could you tell what is what?
If you read norwegish and swedish could you do the same? And can you do apart chinese and japanese???? Can you?
Could you tell if it is serbic or croatic?
I could tell the post was Portuguese, but just because I studied Spanish for 4 years and my brother is fluent in Portuguese. Here's one for you, differentiate between Romanian and Italian. Well, they aren't exactly the same, but really close. I can tell Russian and Polish from German, does that count?