Merging Arrays from Two Effects Using Effect.all and flatMap

const documents = yield* Effect.all(
    [
        getDocuments(parsedData.accountSid, "v1"),
        getDocuments(parsedData.accountSid, "v2"),
    ], {
        concurrency: "unbounded",
    },
).pipe(Effect.flatMap(([docs_v1, docs_v2]) =>

));