Hadn't thought of this - you might be right, but they still couldn't deny it was a valid route.Or they may not pay you on the basis that you deliberately chose a slower route and therefore effectively delayed yourself?
I decided it wasn't worth claiming anyway - the compensation would be less than £3 as the ticket was cheap anyway!So the lesson there is always arm yourself with the relevant pages, don't pay any extra fares, and don't make any compensation claims!![]()