Honestly, I don't remember specifically that, no. I think the thing that impressed me most about Allen was the off-the-cuff (and frequently muttered) ad-lib quips he would make. Of course this was live TV - unexpected things would happen and he was so quick, funny, creative and sharp in his responses.
BTW, someone asked if Barney and Andy were cousins. I believe that in very early episodes of the show, Barney called Andy "Cousin Andy," but they quickly dropped it. You'll also notice that in earlier episodes, Andy has a much thicker accent and is more clownish, but he quickly settled down. As someone earlier noted, he realized the show worked better with Don and the other Mayberry eccentrics as the comics and him as the straight man.