Originally Posted by SeattleFred
A friend in Germany suggested I use the Swiss website,
http://citynightline.ch. I did and it clearly confirms what
Aviatrix found on bahn.de, plus it shows the standard fares that bahn.de omits. The standard fare (for an "Economy 4-bed") is slightly higher than the fare for 3 one-way tickets from Hannover to Zurich on Air Berlin the same evening.
wow, AB is a great idea ^ , unless you really want to experience the night train (which is not really exciting or romantic).