sdo doesn't work too well if two 4 car units are put together, if 5 of the coaches overhang the platform, thats ok i will use the connecting corridor, oh wait look like im getting off at the next stop, at least i wont get a penalty fair as there is only 1 guard and he cant get threw,
my lame sarcasm and poor spelling not withstanding, do i maybe have a point?
But as I said earlier, the Cotswold Line is unlikely to see coupled sets in use - the issue is providing a sensible-sized train, of decent comfort, for the route's off-peak services where an
HST▸ is carting many empty seats around. It's pretty clear from the mix of three and four-car sets that are meant to be coming to the Thames Valley that you would be splitting and joining at Oxford to maximise seating between there and Paddington - as has been done with Turbos for many years under
BR▸ , Thames and
FGW▸ . In which circumstances, you don't really need a corridor connection.