Certainly the case in Summer when I travelled from London to Leipzig on one ticket. Delays (Germany is awful over the last couple of years) and flooding meant I

Certainly the case in Summer when I travelled from London to Leipzig on one ticket. Delays (Germany is awful over the last couple of years) and flooding meant I had to reroute. No problem with my ticket, despite through 4 countries. Likewise a delay from Berlin to Geneva (only two countries, but a long trip) and again no problem with my re-route. Ended up 30 minutes late