After the HW-Q90r eARC update, I did a little digging in the firmware files. Is there a reason that the HW-N950 didn't get eARC - Page 5 - Samsung Community
eARC update voor Q90R QLED TV - Pagina 38 - Samsung Community
ARC Soundbar - will my Samsung Q90 TV utilize Atmos without eARC input? I found this Atmos option in the TV settings. I've read on other threads that unless you have eARC