A REHEATER INTERFACE

A turbine exit diffuser for a gas turbine engine, the turbine exit diffuser comprising: an exhaust duct arranged to receive flow from a turbine; and a plurality of fingers extending axially downstream and radially away from the exhaust duct, each finger of the plurality being circumferentially spaced apart from an adjacent finger of the plurality, wherein the fingers are arranged to contact a reheater during attachment of the reheater to the turbine exit diffuser.