In message .com,
Boltar writes

I've no idea how its actually done but couldn't they just be connected
with
seperate cables (instead of via the coupler), which twist in the middle
so
to match up with the other unit?

It's all done through the coupler face. There are no cables to be
connected/disconnected on this stock. A series of contacts are covered
up and as the trains come together this magically opens. The air is
connected in a similar fashion. It would require the whole coupling to
be redesigned (which would no doubt require a revised safety case),
tested, fitted and then training given to all involved. I can't see it
being worth it for a 20 month closure.
--
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