@jon last time I had a comparable issue with ÖBB, I was allowed to to take a taxi which has then been refunded by ÖBB without issue. It was for a ride between Bludenz and Landeck-Zams at ~23:00 a night Friday-Saturday, the whole ride was 210€ that was then shared between the 3 passengers who took it. 65 km, but in the middle of the night… The night train was stuck bc a huge thunderstorm had blown down the power supply line just before the tunnel and they knew the team was due to come fix it at 06:00 the Saturday morning.