Update: Oct. 20/Dec. 13
The Youtube for the Rattle finale is here. There is a passage where the octave theme crashes to a dissonance; then there is a coda that recapitulates the grand hymn theme after building up from a pianissimo, to come to the dissonance again, and this time the music does not go back to pianissimo but remains FFF to the very end as it plays the rising theme taken from the Bruckner Seventh, with counterpoint from the Bruckner Third and Beethoven Ninth overlaying until one final shout D Major chord. Letocart says Bruckner wanted to use only the Hallelujah at the very end, but Samale seems to think the last 20 measures or so should recapitulate all of western symphonic music to date.