Getting shipping rates does not provide delivery estimation

Retired Boards Appdev Custom Storefronts
1

The shipping rates provided by polling the shipping rates from providers return

Title: (eg:) “USPS Priority Mail”

Price : (eg:) "2.00 (it’s actually PriceV2 but not relevant to this ticket)

Handle: (eg) “usps-priority-mail-2.00”

But the shopify store DOES provide (eg) “2-5 business days” so why don’t we have those values in the API request?

query {
  node(id: "whateverIDhere") {
    ... on Checkout {
      availableShippingRates {
        ready
        shippingRates {
          handle
          priceV2 {
            amount

          }
          title
        }
      }
    }
  }
}