As you will know, the line closes on 22 Dec 2007 until (at the earliest)
June 2010.

What I can't understand is why it needs to be down for so long. How long
was the Jubilee Line down during the JLE inauguration? Not that long, and
it seems to me that that is an even more complex scheme.

Two and a half years seems a long time to screw the good people of Wapping,
Rotherhithe, Surrey Quays and New Cross and stick them on rail replacement
buses. Could not the rest of the work be done while the ELL is running, and
then shut the ELL down for say just 8 months or so while they link it all
together? I mean, it seems such a long time for a line to be down.