Has the success of Ireland and Wales in the Six Nations era created a rivalry between these two Celtic nations? Sara chats to Shane Horgan and Tom Shanklin to find out what it was really like to play in this fixture and relive those infamous encounters in 2005 and 2009. Has the gulf between the Welsh regions and the Irish provinces also been a contributing factor? They also look at how Warren Gatland has shaped this rivalry having coached both nations and raised eyebrows with his selections as Lions head coach over the years.