Their blog about this recently is here: https://loco2.com/blog/more-powerful-rail-journey-planning
Reading between the lines it seems they license the Hacon API from Deutsche Bahn
Reading between the lines it seems they license the Hacon API from Deutsche Bahn
"It’s magic. :) To be honest, this is a strategic topic we can’t comment on. I’m sorry."
i.e they have it via a backdoor - someone is giving them it who shouldn't or they're scraping it.