In message , at
15:54:40 on Wed, 13 Apr 2016, Piatkow
remarked:
Of course before Crossrail the tube trains pulled up alongside the
terminating main line ones at Paddington

Only one of the tube lines.

and Liverpool Street

Do you mean Stratford?

and there was never a long treck across the concourse and through
a maze of tunnels.

Another change which has been substantially elongated is Thameslink to
Victoria/Piccadilly at Kings Cross/St Pancras. Previously it was a much
shorter passage (still extant).
--
Roland Perry