Are you calling for the absence of audio between the two I's?

Because if you are, I must say that it doesn't make sense on the battlefield. Try to SHOUT extraordinari-i in two different ways: once with a long i and another with 2 seperate i's, you'll quickly learn what becomes easiest to shout in a battlefield situation. Language has a tendency to quickly adjust to what people find convenient. But I think TA should explain this in detail.

In any case, the physics of audio comes into play here. When you shout on the battlefield, your soldiers will barely be able to hear such a short burst of silence between 2 vowels. And if they do hear it, their brains will fill in a letter or two to make it fit. I think the human brain's response would be to fill in an "H" between the I's to make sense of the word. "extraordinarihi"