Question on how the SAD1024 is used in the Electric Mistress

[DrAlx]

Unrelated digital values?  ASCII characters?  I should have been a lot clearer with my explanation.
The letters just represent voltage levels at points along an analogue waveform, with the points spaced by HALF a clock period.
Therefore by definition only half the listed voltages (A,C,E,..) will be sampled at a BBD input.
I drew those pictures to highlight how the voltages presented at the input, end up appearing at the outputs (i.e. with gaps of zero voltage, and with one output line just being a delayed repetition of the other). 
If you don't take a sample at the input, then there is no way to make up for that by combining outputs.
The EM scheme is identical to using a single delay line and combining its outputs. Exact same sample rate. Exact same clock noise (I did the test myself on an SAD1024).  No benefit whatsoever.