I’ve come across a Super 35mm scan of the Theatrical T2, it seems to contain the CDS Theatrical Mix among some of the other soundtracks, it doesnt seem to be the DVD one as they are included sepreately, im really not sure of the source but if you want me to extract so you can compare please PM me.

Audio #1
ID : 2
Format : AC-3
Format/Info : Audio Coding 3
Commercial name : Dolby Digital
Codec ID : A_AC3
Duration : 2 h 16 min
Bit rate mode : Constant
Bit rate : 384 kb/s
Channel(s) : 6 channels
Channel layout : L R C LFE Ls Rs
Sampling rate : 48.0 kHz
Frame rate : 31.250 FPS (1536 SPF)
Compression mode : Lossy
Stream size : 375 MiB (1%)
Title : AC3 CDS mix
Language : English
Service kind : Complete Main
Default : Yes
Forced : No
Dialog Normalization : -31 dB
cmixlev : -3.0 dB
surmixlev : -3 dB
dialnorm_Average : -31 dB
dialnorm_Minimum : -31 dB
dialnorm_Maximum : -31 dB