How do you handle talking with a couple who constantly need to interrupt each other?

I'm traveling to South America and met a couple in the lobby from the UK, but this applies to any couple I guess. One thing I noticed that I found kind of annoying is the wife would start talking them the husband would kind of jump in and start to carry on the story she was telling.

It goes both ways where she would talk over him as well but I still find it kind of annoying. Is this one of those things you just have to roll with?