Northern's policy has long been to reject Delay Repay claims for multi-modal tickets; there are a number of previous threads on this topic, e.g.:
In late November and early December last year I submitted two separate Delay Repay claims to Northern, using their paper claim forms sent to the Freepost Northern Railway address. I have still heard nothing back about either claim. Even allowing for the Christmas and New Year breaks, I was think...
www.railforums.co.uk
I following the delay to a journey on Norther of over 1 hour I submitted a delay repay claim. I travelled using my free Concessionary Travel Pass issued by my local PTE. I requested a free Northern ticket as compensation. Sadly, I have received the following reply: Dear gray1404, Thank you for...
www.railforums.co.uk
They claim on page 17 of their
Passenger Charter that:
However, this is wrong on several counts. The rail element of a multi-modal ticket falls under exactly the same terms and conditions as any other rail ticket, the National Rail Conditions of Travel (NRCoT) - and indeed the conditions of these tickets usually refer to the NRCoT as applying to rail journeys. There is nothing in the NRCoT which suggests that delay compensation is different for multi-modal tickets - condition 4.4 simply says that other operators' conditions of carriage apply to non-National Rail elements of validity:
Other operators pay Delay Repay without quibble on other multi-modal tickets, such as Travelcards in London and nNetwork day/season tickets in the West Midlands. Indeed TPE and other operators that accept multi-modal tickets in the North impose no such Delay Repay limitations as far as I'm aware - so this seems little more than a misleading justification for "we don't want to pay Delay Repay on multi-modal tickets".
They also can't exclude compensation under the Consumer Rights Act (CRA), or the minimum compensation entitlement under condition 33 of the NRCoT and Article 17 of the Passenger Rights and Obligations Regulation (PRO). There are limitations on both of these alternatives to Delay Repay - CRA remedies would only tend to apply in circumstances where they carry some degree of 'fault' for the disruption (e.g. not if there is severe weather), and condition 33/Article 17 only entitles you to compensation for delays of 60+ minutes.
Nevertheless, their statement that they "will consider" compensation implies a duty to act reasonably in deciding when to pay compensation; an unreasonable rejection could be challenged. Given that a 56 minute delay is likely to be quite substantial in relation to your planned the journey time, I'd suggest they would need a good reason not to pay compensation in your case.