Usage of 'lang' and 'title' attributes

Hello list,

I was trying to understand the correct usage of 'lang' and 'title' 
attributes, particularly in accordance to WAI 1.0 specifications; but 
one thing is driving me nuts:

<-a href="http://www.w3.org/TR/REC-DOM-Level-1"
    title="[LINK ESTERNO] Collegamento alla Raccomandazione
           W3D DOM Level 1">
    <-span lang="en">
    	<-acronym title="Document Object Model">DOM</acronym> Level 1
    </span>
</a>

The language of 'DOM Level 1' is English, and DOM is an acronym; the 
acronym element inherits the lang attribute from the outer span 
element, so it gets English. Outside, the <-a> element keeps the 
document language (italian) because its title attribute is expressed 
into Italian. Is it right?

Anyway, there are two 'conflicting' title attributes on the 'DOM' 
text fragment; and obviously the inner one (acronym) takes 
precedence. The browser shows 'DOM Level 1' but if you roll the mouse 
cursor over the 'DOM' fragment, you activate the acronym element 
title; if you go over the 'Level 1' part, you activate the a element 
title.

What am I missing??

Thanks a lot in advance,
-- 
Gabriele

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