I am not the best at explaining things, so i understand ppl think I talk nonsense, but I do my best.
kinesis posted 2 pics which showed that both chokes create a current towards the wfc, while the voltages on both sides are both + or -, demartin confirmed this (he also edited the pics), he also said this is the only setup that gave him something of a resonant behaviour.
the pic in this post has the second choke counterwound like you said (did you say that at all, or did you mean something else?), now it has +/- voltage polarities over the cell instead of +/+.
This is exactly the same at the classical bifilar (see below): just imagine the 2nd choke wound along with the 1st (both toward N).
no exactly the same, there is no distributed capacitance between the 2, but there will be when wound as 6-1