It shouldn't be that surprising that the two segments are at the same tempo, but the chords and melodies don't match up at all.
I may be tone deaf, but I think the two chords in both segments
are the same, and the rhythm of the vocals seems to match up with that of the drums.
It does work, and contributes to the many faces of SMiLE as a modular album. However, even with all Brian's chucked out of his brain, I don't think he would have let this one slide in 2004, if it were true.
It may have been the original intent, but was ultimately rejected because he felt it didn't sound quite right.
I hope you get rid of the worms in your sink soon.
Me too. I HATE having a wormhole in my kitchen!