Hi Patrick,
I will pull my consultant hat and say - it depends on how are you going to be using that data.
If you want to see it as a whole, it might be easier to modelling it in the same collection. Otherwise, it will be more difficult to pull it all together once you need to use it. With a single collection you don’t need to bother about linking all the entries, joining them, using multiple datasets to display it, etc.
If the data is completely unrelated, then it may also be a good idea to split it, just to make it easier to work with.