When the Northern services from Manchester to Blackpool had an even worse than normal Sunday meltdown back in September, Northern put ticket acceptance in place with TPE to cover journeys. I was travelling from Piccadilly to Leyland on one of these tickets and was advised to get the TPE service to Preston, which was potentially going to connect to a rare Northern service back from Preston to Manchester.
I was on board and the TPE conductor agreed that ticket acceptance was in place, but that it didn't include these tickets. I was told to pay up, or get off at Bolton. I got off at Bolton and ended up catching a bus up to Chorley and then on to Leyland. I complained to TPE customer service who said that the conductor was correct. I also went via Northern CS to raise the issue. They were great to be fair, offering to repay my bus fares (which I declined), sorted a couple of replacement free tickets for the delay, as well as picking up with TPE about their refusal to accept the ticket. After a couple of weeks of Northern updates saying they were chasing, I received an apology from TPE about the issues on the day, as well as an incorrect CS response. Also had the usual bits about following up with staff training so that it is clear as to the policy in ticket acceptance during disruption.
Hopefully it will be much easier for others to get these used at times of disruption when LNER/TPE have acceptance in place.