Does anyone know why some of the GWR services from Reading to the South West have been retimed slightly? Eg the 1533 service from Reading to Penzance will now depart from Reading at 1530 after the May timetable change. This happens also with the 1633 (retimed to 1630). They appear to leave Paddington at the same time. This is frustrating because it breaks the connection from Oxford in journey planners - not meeting the 7 minute connection at Reading, making it hard to purchase AP tickets.