As Alan enters the squash club at the end of the episode he passes another man exiting on the same stairs. When the camera position reverses the other man has vanished.
Towards the end of the episode Reggie offers Anna a $200,000 dollar overdraft. He then says that once she signs they will transfer those funds into her account. An overdraft is a credit facility, there is no transfer of funds and no banker would ever confuse credit and debit in this way.
Alan Reed mentions "Michelangelo's Vitruvian Man" but that work was created by Da Vinci.
Anna says that her parents wouldn't come to her restaurant if she didn't serve strudel because they are German. Strudel isn't a typical German specialty. It is Austrian and was only traditional within the Habsburg Empire to which Germany never belonged.