There are three different issues here, aren’t there? What the rule/policy is, what the TOC websites say the rule/policy is, and what people want the rule/policy to be/think it should be.
There isn’t anything on that LNER page that unambiguously says “on a return ticket you cannot receive more than the cost of the ticket even if both outward and return are seriously delayed.” I don’t think it even implies that - compensation is not a refund, it’s a payment in respect of some form of loss and the loss (in terms of inconvenience and disruption) on two journeys delayed by 2 hours is greater than that of one journey delayed by 2 hours so it’s a perfectly plausible interpretation of the information presented to expect compensation of twice the ticket price of both journeys are seriously delayed.
Whether that is what the TOC’s scheme actually is, and whether it should be that or not, is separate from what passengers are being told the scheme is.
For what it’s worth it seems a strange anomaly that a long delay on a single ticket provides the same compensation once it reaches one hour but the compensation doubles on a return ticket if it reaches two hours. Since a two hour delay is often pretty miserable and can have a significant knock-on effect I don’t think it would be unreasonable to provide more compensation than merely a free journey. Not having to pay to get to a destination so late that the journey might now be pointless seems to be below the minimum in compensation!
There isn’t anything on that LNER page that unambiguously says “on a return ticket you cannot receive more than the cost of the ticket even if both outward and return are seriously delayed.” I don’t think it even implies that - compensation is not a refund, it’s a payment in respect of some form of loss and the loss (in terms of inconvenience and disruption) on two journeys delayed by 2 hours is greater than that of one journey delayed by 2 hours so it’s a perfectly plausible interpretation of the information presented to expect compensation of twice the ticket price of both journeys are seriously delayed.
Whether that is what the TOC’s scheme actually is, and whether it should be that or not, is separate from what passengers are being told the scheme is.
For what it’s worth it seems a strange anomaly that a long delay on a single ticket provides the same compensation once it reaches one hour but the compensation doubles on a return ticket if it reaches two hours. Since a two hour delay is often pretty miserable and can have a significant knock-on effect I don’t think it would be unreasonable to provide more compensation than merely a free journey. Not having to pay to get to a destination so late that the journey might now be pointless seems to be below the minimum in compensation!