This is a situation that is could so easily be solved with a bit of simple retiming of the branch service and would dramatically reduce journey times. Let^s hope this is picked up on and doesn^t happen in the future when engineering works are taking place on Saturdays.
Questions to be asked if you're suggesting going 13 minutes later ...
- what proportion of passengers arriving into Twyford from the north (i.e. Wargrave, Shiplake, Henley) change to other trains at Twyford - in other words, how many local passengers are there arriving at Tywford to do something there, or connecting onwards into
buses, taxis, cars, etc? And are there local passengers intermediate passengers connecting at branch stations / to or from buses (in particular) who's connections would be damaged?
- how is the local communications network to people in the area to let them know of changes? Are people going to turn up at the branch line stations are start a bit miffed because they didn't know about the change and "feel" they are starting late?
- would the change have any effect of crew rotas / robustness of service (for example, is there an anticipation of erratic delays to trains arriving at Twyford due to short engineering stops anywhere which would break new connections)
My guess is that you'll come back with "not a problem on most of the above, but these are considerations needed. A significant change of timetable for occasional / a few weekends really has negative vibes - on the TransWilts we've got some weekend passenger who are metaphorically pulling their hair out trying to find the right one of four different Sunday timetables over an 8 month period, and that's before a layer of engineering changes on specific / pairs / groups is added to make it all the more frustrating. Yet ... we do understand why, we were warned well ahead of time (short notice changes still frustrate and we ain't got the comms totally right on that one yet).
There was talk for the Marlow and Henley branches of setting up a
CRP▸ ... and indeed an increased passenger involvement, perhaps as an expansion of the user group but pulling in the local authorities too would help in poking into and informing people on things like this. I know the local user groups has been looking at expanding in that way and it sounds to me, as an outsider to the area, sensible. It also sounds like a challenge with (as I understand it) six local authorities involved.