) The issuer of a through bill of lading or other document embodying an undertaking to be performed in part by persons acting as its agents or by connecting carriers is liable to anyone entitled to recover on the document for any breach by such other persons or by a connecting carrier of its obligation under the document but to the extent that the bill covers an undertaking to be performed overseas or in territory not contiguous to the continental United States or an undertaking including matters other than transportation this liability may be varied by agreement of the parties.

(2) Where goods covered by a through bill of lading or other document embodying an undertaking to be performed in part by persons other than the issuer are received by any such person, he is subject with respect to his own performance while the goods are in his possession to the obligation of the issuer. His obligation is discharged by delivery of the goods to another such person pursuant to the document, and does not include liability for breach by any other such persons or by the issuer.

(3) The issuer of such through bill of lading or other document shall be entitled to recover from the connecting carrier or such other person in possession of the goods when the breach of the obligation under the document occurred, the amount it may be required to pay to anyone entitled to recover on the document therefor, as may be evidenced by any receipt, judgment, or transcript thereof, and the amount of any expense reasonably incurred by it in defending any action brought by anyone entitled to recover on the document therefor.