I wonder why Crossrail was terminated at Abbey Wood, rather than taking over the line onward to Dartford with the Greenwich line trains being terminated there instead, the opposite of the Shenfield or Reading line arrangements. It may give some resilience to the Crossrail departures from there, but that is just a euphemism for causing the majority of Crossrail passengers at Abbey Wood to have to make a connection. As throughout Crossrail, despite the vast expenditure, they were unable to configure any cross-platform connection either. So there are going to be generations of onward passengers who, having gone along the long Crossrail platform, up the stairs, and across the tracks, will see what should have been a useful direct connection (had the grandfathers of the Crossrail designers who did the Victoria Line been involved) being dispatched just as they are running (and hopefully not falling) back down the stairs. Anyway, the Crossrail train can leave on time for Custom House, where it can do the same to DLR Beckton line connecting passengers coming down the stairs there as well.
Almost, but not quite, as odd as having the new Crossrail line pass physically under the aircraft parking terminal area at what is now one of London's mainstream airports, London City Airport with no station provision at all, and not even any useful connection with the DLR line which does serve there.