The tracks do loop seamlessly, I was able to confirm that by putting them side-by-side in Audacity and letting it play through. If you want to get a feel for what I mean check out the Miitopia soundtrack for battles. The audio basically plays through the intro part and then continues through the rest of the song, but when it loops, it goes right to the end of the intro portion and plays from there.
Thank you for the reply by the way!