Expedia DOT COMMMM chords

Lord, I hope this question makes sense. I don’t know any other way to describe what I’m hearing.

The tagline of Expedia commercials used to be “Dot Com!” sung in a Beach-Boys-esque style, with the voices sliding into the final chord.

The tagline I’ve heard most recently is the “Dot Com!” sung in straight tones.

Set aside the sliding into the chord in the earlier version. What is the difference between the chord in the earlier version and the one in the current version? The current one sounds to me like a simple major chord, and the earlier one is different.

All I know is that Matt Mahaffey wrote the first one at least, not sure if the second was his doing too. I had noticed it was different now though.