I have been told that the sleeper for the Prague to Zurich is currently only available till mid Feb. I intend checking regularly until the 9/5/2024 booking is available, but in the meantime I want to make sure I choose the right train and right booking method. 

On an earlier question I was told “This can be booked at https://www.nightjet.com/ train number is EN 50466 Add Interrail/Eurail as discount for each passenger and search to get passholder fare. Cost for 2 in private sleeper is €116 or €156 for en-suite sleeper.” The one I want is the cost for 2 in an en-suite sleeper.

So if I go to nightjet.com and enter a date in early Feb (to see how it works) I select adults and load my discount, it gives me the following options. Would the first one be the right one to make the desired booking

On a subsequent question I was told “The sleeper can currently be booked until 18 February, on tickets.oebb.at and cd.cz”. So if I go to oebb.and search for the same dates and destinations, i get a different outcome with no idea which one to choose

If I try the cd.cz web site, with the same parameters I get the following result, but unlike the others, it doesn’t translate to English so I don’t know what I am looking at, if the sleeper is available or whatever

So, of the 3 sites, nightjet seems to be the easiest to understand, so is that the one I should be monitoring?