Unreleased final consonants

the "o" in "clock" on Nona's website

I am further confused by the fact that I tried clicking every one of the examples on that site and none of them had the word "clock"!     
Wrong site?  Isn't it the same one with the "ship" example you referred to earlier?  And the by-now-infamous "frog"?

CJ

Now I'm thoroughly puzzled.  Is British o (dog) the same as American au (taut)?  I've never heard that before.  I've always been told that we do not have the British o (dog) in AmE.

British o in dog is very similar to American au in taut, but I don't think they are the same. I have always thought that American au is a bit longer than British o, and that British au is more open than American au. But I'm starting to get confused too now

And while we are at it, the word pure the way it is pronounced on that website sounds to me more like /pjo:/ than /pju/. I understand that some Brits pronounce pure like that, but I don't think it is representative of the diphthong /u/. I'd say that the way it is pronounced on that site is closer to the vowel /o:/ instead.

CalifJim wrote:

To me the British au is closer to /o:/ ("higher"), and the American au is closer to /a:/ ("lower")

Yes, I think you are right, provided you mean "higher" or "lower" on the IPA chart. So I guess Italian "o" is higher that American "au" for those how make a distinction. However, this is not true for all varieties of Italian, I guess.

By the way, "clock" is under the symbol "k" on that website.