as an aside to this nice maps here, i would like to add that the metro (underground) building frenzy that China also has (now 20+ and some 4 more planned to open in 2015) are often lines that link those faraway HS-stops with the actual citycentre. All can be found on
www.urbanrail.net
So your actual trip will likely go: metro to HS stop, all the ID+luggage checks, HS train to B, then local metro into town. Which adds up to 2 hrs to any A->B trip. In all fairness though, the old stations were far too small to also accomodate busy Hs-lines as extra.
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as another aside and just as some small add-on: the direct link Sjanghai-Ningbo is done via the longest bridge in the world, with buses ev. 30 mins, I really do not know if they are still faster as the HS trains via Hangzhou or not. Rode over it some 5 years ago in my last China trip. At that time Hangzhou-Ningbo had just local trains, horrendous overcrowded, ev 2-3 hrs, but direct express buses every 5-10 mins or so.
A nasty thing for foreigners (beside the ever stricter general visa-rules) is that HS-trains require ID-checks and tickets are only quickly sold against Chinese ID (which have chips-they can also thus do electronic boarding lists for ships astonishingly quick) via machines- foreigners have to Q up and have it done all manually entered in the system.