The Bradford to Liverpool service was not a mandatory output from the Northern Hub as the Bradford to Manchester Airport service was. However the
Manchester Hub Study, Executive Summary says:
and with Victoria becoming a through station, the example timetable showed 4tph to Manchester Airport, Liverpool, Wigan and Preston. There were contradictions in the Northern ITT documents in that the
Franchise Consultation Response stated:
while the ITT and Service Specification mentioned nothing about a third train, specifying only 2tph extended to Manchester Airport and Chester. You would have expected bidders to seek clarification on whether this third tph was required or not and if so where the DfT expected it to go west of Manchester. Whether this contradiction was sorted out at the bid stage or during contract negotiation, the result was a third tph to Liverpool.
So as far as Calder Valley services go (including the via Brighouse service) the only major difference from the Hub example timetable is a service to Chester rather than Preston.