Except "Cake" as a film has gotten largely negative reviews and Aniston's personal reviews are nothing exclamatory. Certainly not the type of rave she would need for someone like her to break into Best Actress. She won't be nominated for an Oscar and the best she can hope for is a GG nod since they love their stars.
and Chastain has no shot at being nominated for Miss Julie. She could win for AMVY though, slay my red-headed sis!
The movie received mixed/negative reviews from Screendaily, The Hollywwod Reporter, Variety, The Guardian and The Evening Standard so this "Oscar buzz" is mostly PR although her performance was generally well received