Did they make any calls at Blackburn Hellifield or Settle or non-stop through all?
Non-stop between Preston and Carlisle (at least for actual calls, pathing may lead to pausing in the platform), always has been for the last 8 or so years, certainly since the WCML modernisation finished.
Rather randomly I suppose, one weekend (or series of) way back in 2003~, Edinburgh-WCML-Plymouth trains were diverted via the S&C and Manchester, for some reason calling at Blackburn and Darwen on-route. I can remember standing on Blackburn railway station seeing departures for the West Country displayed. I think the call at Darwen was for pathing purposes over the single line thereafter that was for some reason designated as a passenger stop.