In message , at
07:05:05 on Thu, 25 May 2017, Ding Bat
remarked:

Does HEx have to continue to terminate at Paddington? Can't it go nonstop
to Paddington and then continue to Abbey Wood with the same stops as
what will replace Heathrow Connect?

If an agreement is negotiated, then it could go further east, if
something is sorted out to get their trains from the fast to slow lines
approaching Paddington. A flat junction is probably out of the question.

Very politically and commercially sensitive project even then.
--
Roland Perry