I've just bought an Advance from Bournville in Birmingham to Euston. Normally I go for ticket-on-departure but I decided to try e-ticketing. The e-ticket that came through has a fixed time for both the local, non-reservable (Bournville to Birmingham New Street) leg and for the Virgin leg to Euston. If I'd got the ticket from a TVM, it would only have a reservation for the Virgin leg printed on it, leaving me free to take any "reasonable" connecting local train. Would it be permitted to take a slightly earlier (but still "reasonable") train into New Street than is printed on the ticket, given that this would (as I understand) be permitted if no local train were printed, as would be the case with a "proper" ticket?