Channel Islands XDC-2 and PS Audio PPP

I know that the XDC-2 is one of the few units currently available aimed specifically at eliminating DC on the AC line.

My question is this: if the PPP takes mains AC current, converts it to DC and then back to AC, does it also, in the process, eliminate DC? In other words, does it--albeit at a much higher cost--also do what PS's earlier "hum busters" (humbusters) were designed to do?
The PPP does nothing to remove DC, and in fact does not do the complete AC to DC to AC conversion either.
I have a PPP and also an XDC-2 for DC filtering. I have it hooked up: wall to PPP to XDC-2 to amp, as recommended by PS Audio.