When having dinner with friends, how much do you need to include everyone in the conversation?

Last night, I went over to my fathers house for dinner with him, his wife, and a couple my father and his wife are friends with. The couple and my father and his wife all work in the same industry and spend quite a lot of time dealing with each other as colleagues. The whole night was shop talk, no one asked me how I was doing or what was going on with me. Was this rude of them, or is it fine to steer the conversation towards what the majority wants to talk about?