Their submissions to Rail North and their 30 year rail strategy.
Also remember its illegal for them to spend transport cash subsidising services outside their Transport Authority area or on projects which dont directly benefit their local residents.
For example they couldn't say we want to refurbish Ormskirk Station as it doesn't directly benefit residents of Merseyside and they couldn't subsidise journeys between Burscough and Ormskirk, but they could say we in partnership with Transport for Lancashire wish to part fund electrification of Ormskirk to Burscough as it will be economically beneficial to employment in Merseyside by increasing the size of the potential labour pool- It will cost for example £200m and bring benefits to Merseyside of £10m per year so we feel it justifies an investment of £50m in assisting Transport for Lancashire.
A real world example would be TfGM agreed to help subsidise the Greater Manchester portion of the Transport for Lancashire commissioned Blackburn to Manchester via Todmorden service including adding station calls north of Rochdale.
So it was worth clarifying then that your view was just that, and you have no inside knowledge of what it is they actually do want to do. It's good to have discussion, but IMO a simple "IMO" goes a long way.