I have a hard time believing it does work fine unless they did internal modifications to the fluid passage OR I misunderstood how the 3-bleeder, 2-line calipers worked. I was under the understanding that circuit A activated (for example) the upper two pistons on the RF , lower two pistons on the LF and the whole right rear brake. If this is a separate, redundant system I cannot see how both piston sets on that caliper could be actuated unless there was a jumper line verse plugs.

So what did I miss?