In Sunset of Seven Suns, THE HOLY's Vocal Motif can be heard at 00:47s, as the backing chord progression (played on woodwind).
It's slightly extrapolated, with some extra transitionary notes, but it's still clearly the same motif. The rhythmic pattern is even the same for each identical note.
Ngl with all do respect do not understand that perspective. Outside of the extra transitionary notes, it is very clearly identical. I threw together a video to demonstrate it.
I stumbled upon a youtube comment noticing this (1, but also found 2) and I agree with it. it's literally a variation of The Holy theme #2 that's transposed 5 semitones up with a few additional notes, I guess to make the melody in this fragment of the song more interesting / reduce the feeling of "waiting" for the next note / fit the faster feel and rhythm of SoSS. idk how you can say it's accidental when it's a pretty similar pattern that uses the leitmotif.