I've created a custom post type called 'events'. I've also created a custom taxonomy called 'event_categories' containing the 12 months of the year.
I am trying to get 'events' held in August AND (not OR) September (term IDs 41 and 42) using the following urls:
For some reason these urls return the same results and don't use the AND operator. They both use the OR operator and return events that are in either August or September.
I've also tried the following urls below but neither utilise the AND operator: