In message
-septemb
er.org, at 15:18:47 on Mon, 26 Jan 2015, Recliner
remarked:

Crossrail will serve all except T5. HEx will presumably continue to serve all except T4.

Which will give HEx an advantage with BA pax.

The way they've served the three terminals [treating 123 as a single
point] with one through train and a shuttle has always been a dogs
dinner. BA probably has the clout to get BAA run the direct train to
whichever of T4/5 they are using this week (so to speak).

The Crossrail trains will be 4tph, so there's a possibility they could
interleave them to both termini, and have a 4tph service from each;
half-and-half. With judicious timing you could perhaps offer an easy
change at 123 from a Crossrail train to a HEx not far behind (from the
'other' terminus). That would of course require HEx to be able to
overtake the Crossrail train.

The plans for the timetabling were all consulted on and finalised five
years ago, I think. So this is perhaps closing the stable door after the
horse has been chopped up and stuck in a Lasagne.
--
Roland Perry