Likewise, Scottish / Northern Irish accents are more similar to each other than accents in the Southern end of their own respective landmasses.
But in this case, it's someone far, far away from Ireland* developing an "Irish" accent. I would be very interested to know if that accent sounded geniune to someone Irish or if the accent was an SNL style Irish impression, ie what the patient _believed_ was the accent.
* although it is worth noting, despite the distance, the Newfoundland accent is absolutely indistinguishable from a genuine Irish accent. Any time I hear Newfoundlanders speak I'm stunned at how they sound like they live a few miles away from me.
[example - this guy could be my nextdoor neighbour](https://www.youtube.com/watch?v=8YlyT9bg4o8)