Code: contentful gatsby graphql filter elemMatch AND multiple

If I use the following filter, it's OR

filter: {tags: {elemMatch: {contentful_id: {eq: $tagId}, name: {eq: "published"}}}}

because filters over multiple fields are OR

filter: {
  tags: {
    elemMatch: {
      contentful_id: {
        eq: $tagId
      }, 
      name: {
        eq: "published"
      }
    }
  }
}

resulting in

tag.id === $tagId
OR
tag.name === "published"

If instead I use (abuse) the different matcher things for the same field, it is AND

filter: {tags: {elemMatch: {contentful_id: {}, name: {eq: "published", in: "i.book", nin: "page"}}}}

formatted:

filter: {
  tags: { // only 1 field
    elemMatch: {
      name: {
        eq: "published", 
        in: "i.book", 
        nin: "page"
      }
    }
  }
}

resulting in:

tag.name === "published"
AND
tag.name === "i.book"
AND
tag.name !== "page"

I'm pretty sure I'm abusing the 'in' operator here, to have a second 'eq'. And I assume the 'glob' and 'regex' can be used the same way. So we can use 4 x '===' (eq, in, glob, regex) and 2 x '!==' (ne,nin)