On my 2nd 950 paired with the Pioneer player. ( 950 with the Panny is in use at the moment ..I can’t interupt).
Found layer change on ‘Gladiator, Sig. Selection” DTS-ES

I found it on my counter to be at 76:28 or 1:16:28 depending on your counter type. Chapt 14 (XIV)
I have a ½ sec to 1-sec freeze on video, audio reacquires before the video rolls again (under 1/2 sec?).

Less productive was my check of LOTR –Theatrical Version (2-disc) (gonks is 4-disc I believe).
Disc One: DD-EX. 93:25 or 1:33:25 This one lands at the changeover from Chapt 23 to 24. There was no loss of audio signal noted. Bare under 1-sec freeze on video at end of Chapt 23.