It's a possibility. In the past, if a member couldn't come to the House, it wasn't because of an external obstruction. The member couldn't come, either because of a storm or because he or she couldn't make the trip. It was because of something external. That's one thing.
Breach of privilege is when something prevents members from doing what they are supposed to do in the course of their work in the House. It's not a big difference, but it's a very important one.