The voice needs to be made clear and the words have to be more distinct for anyone to understand. Italians don't speak with their words bleeding together like the voice does.
I think it's something to do with the voice playback. Sometimes I catch glitches that leave off entire syllables and the only way to make it out is the slow play button.
No, Italians speak very fast and their words do blend together. Blending happens in every language. Practice, practice and practice. After while your ears are used to it and you will hear all the words.