A more thorough explanation:

Definition: Interlining is when a carrier transfers a shipment to another carrier to reach a destination that the first carrier does not serve.

Example: If a person wants to ship a package from New York to a small town in Montana, but the carrier they choose only delivers to major cities, the carrier may use interlining to transfer the package to another carrier that can deliver to the small town in Montana.

Explanation: Interlining allows carriers to expand their reach and offer delivery services to destinations they do not serve directly. This can be beneficial for both carriers and customers, as it allows for more efficient and cost-effective shipping options.