When adding a second condition (of the same type/name of an existing one), it overwrites the existing condition, not adding an additional one.
Season Pass > Advanced
Add “Duration != 11160”
Save
Add “Duration != 11040”
Before you even save, you can see the 11160 is gone and now the only one is 11040.
It’s a very simple thing, those advanced options. E.g.: What would you expect it to do if it’d worked: AND the conditions or OR them?
I’m guessing you’d expect it to OR them. But then the engine would have to discriminate between “like” and “unlike” conditions to “guess” when the user wanted to AND conditions vs. OR them, the developers would have to make decisions on what constituted “like” and what “unlike,” and no doubt it would increase the confusion factor.
It could get really messy–both in use and in the devs coding it.
I know a solution, but it wouldn’t be very “average end-user”-friendly. Computer/software tech geeks, particularly those with a *nix background, would love it, though 
I would rather die than learn regex. 
The option to add conditions [+] should just be inclusive... at least it would be something... the fancy iTunes-like smart editor can come later.