It's a loophole because they can put a cap on these low early reservation, fixed itinerary prices because of the assumption that only people travelling on a sho

It's a loophole because they can put a cap on these low early reservation, fixed itinerary prices because of the assumption that only people travelling on a shoe-string budget will do more than six hours of travelling in a single sitting. This keeps the number of travellers who do Norddeich Mole – Zagreb Glavni kolodvor (eighteen hours of train travel) to a minimum — essentially just some students and people on the bottom rung of the economic ladder. A negligible number of people. Once you start allowing extreme transfer times of 24 hours, you are basically inviting people to exploit that system, which will drive prices up eventually, because those people would otherwise have bought multiple tickets (one for each stage of the journey).