Thanks to nearly 100 episodes of “Nashville” and five seasons of “Friday Night Lights,” Connie Britton is often associated with the South. Few fans of ABC’s country-music drama will forget her crooning duet, “No One Will Ever Love You,” and fewer still will forget the fierce yet loving twang Tami Taylor put on every piece of advice she gave all those Texan school kids (not to mention her stubborn, football-coaching husband).