This diagram illustrates how multiple elements contribute to the total VSWR of a typical W/G subassembly.  In the above case, elements of interest such as a triple crossguide coupler at figure A, a fixed attenuator at fig. B, and a crossguide coupler with multiple bends at fig. C are shown with their corresponding contributing VSWR values.  By entering the values given above into the VSWR calculator, we see that the probable assembly-chain VSWR of:
1.05 + 1.15 + 1.09  = 1.19