Zoe and Eva have several scenes together. Some are work-related and others are the two of them in a confrontational situation, but not regarding a man.

wait, nope... DOH! 2/3! Gawd this movie is infuriating! There are SO MANY moments where there could be plot-relevant, entertaining dialogue between the two main female characters, but instead they just stand there in silence, or one talks at the other while the other remains silent, or they talk to the men in the room without engaging each other. (Yet, there are lots of full dialogues only between men, about subjects not related to women.) A perfect example of this is that bloody conversation about the existence of a soul betwen Zoe, Eva, and Frank. Zoe and Eva look right at each other for most of the conversation, yet Zoe isn't talking to Eva, she's arguing with Frank, who dominates the discussion. There is a verbal exchange between them that you might count with dubiousness (eva says four words to Zoe: so what's your theory?" but they're not talking TO each other. Eva is interjecting in an argument primarily between Zoe and Frank. If you, like me, think this hardly counts as two women talking to each other about something other than a man, your only other actual verbal exchange between the women is towards the end with the "where's kirk?" conversation, which I won't spoil. It starts off with passing potential, but then Eva quickly starts asking about Kirk, bringing the topic of the conversation to a male colleague.