Funny you say that because in ALL sex scenes , the actors don’t have direct genital contact with each other , they use skin colored pads as a blocking protection!! So if you thought they were actually doing it, means they are THAT good.
I know they weren’t having direct genital contact, but they WERE up close going at it rubbing real hard so, yes they were having sex in a way even though not directly eating each other out, the clit is very sensitive and it feels real. And I bet it was amazing!!