Man I love Severance, the black Kier thing in the most recent episode was hilarious but also gave a good insight into Seth ad a character. It showed me that he hadn’t fully given his life to Lumon, in the way that he was still able to dislike decisions they made. As opposed to Natalie.
I'm not sure Natalie has. She knows she needs to give the appearance in order to keep her position. IMHO she was coaching Seth as to what the right response was.
The exchange in looks he had with Natalie character right after the board dropped off the call was clearly also an indication of dissatisfaction from both of them.