One thing I forgot to characterize was the reflection measurements (S11 and S22). The 11947A datasheet cites a VSWR of < 1.7, and < 1.3 below 50 MHz for the input port. Setting up the board on the VNA, I measured S11:
The value at 200 MHz is 1.16. Well within spec, even beyond the operating range. Looking at the output port:
Also within the original spec of output port VSWR < 1.8, and < 1.2 below 50 MHz.