Originally Posted by NewbieRunner

If you are on one ticket TIV-FRA-LHR and miss your connection in FRA, they will put you up in a hotel at or near the airport and put you on the first available flight to LHR in the morning.

I think flights from TIV arrive in T1B and flights to LHR usually depart from T1B though you may have to clear transfer security. Unless the incoming flight is late you should be able to make this connection.

I don’t know if the current policy is different but Business Saver fares are not normally refundable.