I have become pretty good with adjective endings but I still haven't pinned down the adjective ending after "alle". A native German speaker told me that the ending is always *-en* after "alle" but another told me that it follows the adjectives following the definite article, ie sometimes *-e* sometimes *-en*.

But then, thinking about it, as "alle" will always be plural, if it follows the definite article rule it will always be *-en* anyway.

So I guess my question is "Is it correct that the adjective ending after "alle" is always *-en*?"