We resort to away teaming when what you describe doesn't work, usually by telling both teams that both goals are important, and they need to figure out how to deliver.

Since away teaming is an accepted technique, it's usually considered as a way to solve these issues.

I guess we would need to completely give away the concept, and just accept that some thing won't get done unless they are important enough to keep two distant teams aligned (in other words, they are important enough for someone high in the hierarchy).