Connecting arrangementfor an annular duct, conveying hot gas, of an intermediate turbine housing of a gas turbine, in particularan aircraft gas turbine, comprising a first housing element, in particular a panel of an intermediate turbine housing, a second housing element, in particular a fairing of an intermediate turbine housing, which element is arranged in the circumferential direction next to the first housing element, a fastening unit which is configured to connect the first housing element and the second housing element to one another, at edges (14, 18) of the first housing element and the second housing element that are adjacent to one another in the circumferential direction, based on clamping in such a way that thermally induced relative movements are allowed within certain limits when the gas turbine changes from one operating state to another operating state, the fastening unit comprising a clamping element which is attached to one housing element by a connecting means, in particular a screw-nut connection, which clamping element rests against a clamping surface provided on the other housing element in such a way that the other housing element is received between the clamping element and the one housing element, characterized in that the upper face of the clamping surface facing the clamping element, in relation to a longitudinal section which extends substantially parallel to the adjacent edges (14, 18) of the two housing elements (10, 12) and which lies in a plane comprising the axis of rotation of the gas turbine, has a clamping surface contour (24a, 24b) which is designed in such a way that it counteracts a rotation of the clamping element about an axis of the connecting means when the first or second housing element is decambered, the clamping surface contour (24a, 24b) having at least one clamping surface contour portion which has a slope that differs from a slope of a surface contour of a surface portion of the housing element surrounding the clamping surface, the clamping surface contour being a straight line that is inclined relative to a straight line of the surface contour, the line of the clamping surface contour and the line of the surface contour forming an angle (α) of approximately 0.7° to 1.7°, preferably 1.0° to 1.4°. a first housing element, in particular a panel of an intermediate turbine housing, a second housing element, in particular a fairing of an intermediate turbine housing, which element is arranged in the circumferential direction next to the first housing element, a fastening unit which is configured to connect the first housing element and the second housing element to one another, at edges (14, 18) of the first housing element and the second housing element that are adjacent to one another in the circumferential direction, based on clamping in such a way that thermally induced relative movements are allowed within certain limits when the gas turbine changes from one operating state to another operating state, the fastening unit comprising a clamping element which is attached to one housing element by a connecting means, in particular a screw-nut connection, which clamping element rests against a clamping surface provided on the other housing element in such a way that the other housing element is received between the clamping element and the one housing element, characterized in that the upper face of the clamping surface facing the clamping element, in relation to a longitudinal section which extends substantially parallel to the adjacent edges (14, 18) of the two housing elements (10, 12) and which lies in a plane comprising the axis of rotation of the gas turbine, has a clamping surface contour (24a, 24b) which is designed in such a way that it counteracts a rotation of the clamping element about an axis of the connecting means when the first or second housing element is decambered, the clamping surface contour (24a, 24b) having at least one clamping surface contour portion which has a slope that differs from a slope of a surface contour of a surface portion of the housing element surrounding the clamping surface, the clamping surface contour being a straight line that is inclined relative to a straight line of the surface contour, the line of the clamping surface contour and the line of the surface contour forming an angle (α) of approximately 0.7° to 1.7°, preferably 1.0° to 1.4°.