Lmao I feel so stupid for missing such a obvious thing haha 😂. Thank you for pointing out. From what I have read, communication between ecu and headunit on NBT Evo is not given like on ID7/8.
https://github.com/mhmm-ok/BMW-SUPRA-IDrive5-6-Android-Auto found this repo that seems to give ssh access over an apk file. have you heared of it? the apk seems to be legit and no maleware