Interesting 'blog'? from Roger French (BusandTrainUser) today.
This again shows that the delay repay system only works for a simple one train one ticket journey.
I had simular with a journey from Banbury to Pershore. Cross Country where running almost exactly 2 hours late from Banbury to Oxford. This made little difference to my Journey as I just caught the first available train and actually arrived at Oxford a few minutes early.
However I then found the Cotswold line was blocked by a failed train and eventualy got to Pershore about an hour and 40 late after a very uncomfortable taxi ride at
GWR▸ 's expense. GWR rejected the claim because they claimed Cross Country where at fault.