contractual limitations provision

Must denial letters inform the claimant, seeking ERISA-governed benefits, about the contractual limitations provision?

A recent court trend, like with the First, Third and Sixth Circuits, requires denial letters to inform the claimant of the Plan’s contractual limitations provision. See, e.g.,  Santana- Díaz v. Metropolitan Life Insurance Co., No. 15-1273, 1st Cir.