Prompted by the thread about possible connections to/from OOC (https://www.railforums.co.uk/threads/hs2-old-oak-common.240858/) and observations about long (unwalkable?) distances, I wonder about the longest platform to platform distances elsewhere on the network. e.g. I changed trains at Nottingham recently and the distance between say platforms 2 and 4b seemed quite a long way. Similarly many London Tube 'connections', up down round down again ..., or between platform and exit, are quite long.