Interference: The act or an instance of hindering, obstructing, or impeding.
There's a difference between being annoying and interfering. Friends who become annoying by telling me about their personal relationship with Jesus I just tell them I'm not interested. If they continue I avoid them. There's nothing that requires me to be this annoying person's friend. If we all go out to lunch and that person want to pray over their meal they can do that but don't tell me to hold off on eating until the "blessing" is done. That's interfering, even if it is just mildly interfering.