@JustJohnny @Consoomer88 @DuckKingLoow @SuperLutheran @Zealist @professionalbigot69 @Bad_Banner Well, oral sex, to completion, would obviously violate the prerequisite of being open to conception. So that would be a no-go under the paradigm I laid out.
As for the rest, sex only with intent to conceive would rule out sex while the couple knows the wife is pregnant. Which a. an absurd hardline position I've never heard before, and b. a great way to find yourself getting divorced.