For an idea of how bad various accents can complicate recognition see how Baltimoreans pronounce "Aaron Earned An Iron Urn": https://www.youtube.com/watch?v=Oj7a-p4psRA
For an idea of how bad various accents can complicate recognition see how Baltimoreans pronounce "Aaron Earned An Iron Urn": https://www.youtube.com/watch?v=Oj7a-p4psRA