Get "post ancestor" based on its ancestor in custom menu

Hello,

Yep the title is pretty obscure so I’m going to explain. Basically I’m trying to remix the dimox breadcrums code to make it work using custom menu order.
I’ve got a very complex menu, using categories, pages and custom-post-types, so the breadcrum trail is very hard to build. I was looking for a plugin that would be able to build a breadcrum based on the custom menu but found none. So I’m trying to build it myself.
For example I’ve got:
– page#1
– taxonomie archive #1
– taxonomie archive #2
– page#2
– category#1
– category#2

I would like my breadcrums to be able to display something like home > page#1 > taxonomie archive #1 when I’m on taxonomie archive #1

I was wondering if there was a way to get the ancestors of my post (post used as a general word, they are actually pages, category/taxonomy archives, etc)not based on the wordpress order, but based on the “order” I would give them in custom menu.

There should be something possible, since wordress is able to give menu items the “current-menu-ancestor” class to a page for example even if it is not related to the post defined as its child in the custom menu. So I think that wordpress is able to find the “custom menu ancestor” (let’s call it this way), I just have no idea how to do this ^^
If anybody has a little peace of code to do this, I would appreciate the help (or a plugin able to create breadcrums based on custom menus)

Thank you ??