In the last scene of Eleanor entering Chidi's office in Sydney, the light switches next to the door are U.S. standard, not Australian.
In episode 1 of season 1, Chidi mentions that he speaks French exclusively, but in this episode, he gives his lecture in English.
Tahani brags that Maggie Smith is her godmother. However, someone as pretentious as Tahani would only refer to a titled person using her full formal title, in this case, as Dame Maggie Smith.