My son, home for the weekend, has the return portion of an Off-Peak Return Cardiff Central to Altrincham, which was supplied by his company. He wants to return direct to Cardiff Central from home (Parbold or Wigan stations) either tomorrow or Monday. We assume that he should join the route at Stockport but were wondering if he bought a single to Crewe from Parobld or Wigan he could join the route there and save a lot of time going over to Stockport. Is this a valid and quicker way of getting back to Cardiff? Thank-you in advance. In this case faster rather than cheaper is the primary goal.