Look at the example in the lesson of “toi et moi” -  2 stress pronouns used. 

The rule that the stress pronoun is 2nd applies when the other subject/object is represented by a noun/proper noun, not another stress pronoun.

Eux and nous are both stress pronouns here - see Aurelie’s note that subject and object pronouns aren’t used in this way in compound subjects/objects in French. 

Just a fun little tidbit: did you know that English, too, has a sort of equivalent to French stress pronouns?

Him and me, we went to the movies yesterday. "Him and me" kind of are the English equivalent of the French stress pronouns.

That must be her! Was it them who knocked? ...

In those examples, by strict grammar one ought to say:

He and I, we went to the movies. That must be she! It was they who knocked?

But in the attempt to stress the subject, English decided some time ago to simply use a different form of the pronoun. It used to be (and still, to some extent is) considered colloquial, but to say "Was it they who knocked?" sounds increasingly stilted to all but the most conservative English speakers.