In article , asdf
writes
Unless I've misunderstood something, according to a recent post
) and thread, there is a connection
from the fast lines to Watford, and it's currently being moved further
south.

You've misunderstood.

Fast -----#####---------*------*--------#####-------
Moor Park / / Rickmansworth
Slow -----#####----*--/ /
\ /
\ /
\ /
\ /
*
|
# Croxley
|

Each line represents a double track.

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