If you have a male antagonist, your movie fails the test unless you have a specific scene where you sideline two of your female characters to talk about something other than the plot.
Similarly, if the story has an ensemble that features any male characters you need to contrive a way to get rid of them for one scene just to check an arbitrary box.
Using this as anything other than a thought experiment ensures that once per story female characters will be demoted to side characters featuring in a meaningless dialogue scene.
Not really.
If you have a male antagonist, your movie fails the test unless you have a specific scene where you sideline two of your female characters to talk about something other than the plot.
Similarly, if the story has an ensemble that features any male characters you need to contrive a way to get rid of them for one scene just to check an arbitrary box.
Using this as anything other than a thought experiment ensures that once per story female characters will be demoted to side characters featuring in a meaningless dialogue scene.