Yes, it is not stiffening the board up ! this would make no sens ! But i can understand you because is not easy to understand the main Princip of Silentflex. The Ruber is a speciall mix of high Shock Absorbing Rubber witch is also used since long time in the Automotiv Industrie. It gives the board very speciall and unusall high riding Quality.Witch also in good for save you bones.
There is a conection with no conection !!! You yust mount the Small Titanal layers on to the Board ! The top plate were you mount your Binding with the smoll Metall Ring on, is you connectet with a vulkanisation ov Rubber together.
So all i all you are placed like a engine of a car on Silent Blocks without losing trasporting power to the Ege.
greets Silent