More positively…
Mrs Bungle travelled from Birmingham area to Cardiff last week. Outbound changing at Bristol Parkway on to a GWR Paddington-Cardiff, rather than the direct CrossCountry service.
Connection was delayed due to a points failure in Swindon.
It turned out that although it was running very late, the preceding GWR on that route was also very late, and would actually have worked as a connection in its place - arriving in Cardiff only 8 minutes later than originally scheduled. This is what GWR claimed, and refused the Delay Repay claim.
Unfortunately, for some reason platform staff directed Mrs Bungle to a Gloucester-Weymouth, changing again at Filton Abbey Wood on to a Portsmouth-Cardiff - therefore arriving 44 minutes late.
The point is, I’d been concerned that GWR would reject the Delay Repay claim on the basis that the delayed Paddington-Carmarthen at Bristol Parkway had provided a valid connection, regardless of the fact she ended up changing again and being much later on the advice of platform staff. Thought it might be black-and-white - connection was there, therefore no compensation owed, regardless of what happened.
Happily, after a couple of days, they accepted the first appeal and paid up. Fair play to them.