By the wordings "Any Belgian Station", does that allow if my ticket purchased (eg. Thalys ... Paris Nord - Brugges) with an ABS that upon unboarding the Thalys train I can hop into any Belgian train then get off at Ghent and stay there for 5 hours, then board again another Belgian train headed for Brugges and then get off there and stay for say another 4 hours, then board another Belgian train going back to Brussel Midi Station? Is that a valid plan? Or do I need to buy ticket upon each ride to a Belgian train (excluding 1st use from Brussels to Ghent)? All these will be with the day of the scheduled trip per ticket.
Kind advice is highly appreciated.