Relationship between fulfillmentLineItem and refundLineItem

Hi,

I found out from a question posted by someone else that there is a relationship between returnLineItem and fulfillmentLineItem, allowing us to determine which fulfillmentLineItem corresponds to a given returnLineItem.
However, it seems that there is no such relationship between refundLineItem and fulfillmentLineItem.
Below is the query I used. If there is a way to determine which fulfillmentLineItem corresponds to a given refundLineItem, please let me know.

Additionally, In refund > order > fulfillments > fulfillmentLineItems, all the fulfillmentLineItems for the order associated with the refund are included, so it cannot be used to link refundLineItem with a specific fulfillmentLineItem.

query refund($id: ID!, $first: Int = 250) {
  refund(id: $id) {
    id
    createdAt
    updatedAt
    return {
      id
    }
    order {
      fulfillments(first: $first) {
        fulfillmentLineItems(first: $first) {
          nodes {
            id
            quantity
            lineItem {
              id
            }
          }
        }
      }
    }
    refundLineItems(first: $first) {
      nodes {
        quantity
        lineItem {
          id
        }
      }
    }
  }
}