Can I filter the value of an @extended field to get a result from subgraph 1 and 2?

good night. I have 2 subgraphs inside my supergraph gateway. Subgraph 1 brings me an id and description, and subgraph 2 brings me a state that depends on the “id” of supgraph 1, and is filled by an $external field that is inside an $extend type through an $key. In the supergraph, can I filter the $external field of a specific state and only get the result combining subgraph 1 and 2?

@lenz @trevorr