Does the Northern Ireland and Republic of accent sound same to outsiders?

To some outsiders, the Northern Irish and Republic of Ireland accents may sound similar, while to others, they may sound quite different. There are certain similarities between the two accents, such as the use of rhoticity (pronouncing the "r" in words like "car") and the tendency to elongate vowels. However, there are also some key differences, such as the pronunciation of certain vowels and consonants, and the use of different intonation patterns.

Overall, while there are some similarities between the Northern Irish and Republic of Ireland accents, there are also some important differences. The degree to which these accents sound the same or different to outsiders will depend on a number of factors, including the listener's own accent and level of familiarity with the accents of Ireland.