Wissenswertes

The Fields Medal, noted as having been won by Elizabeth's husband, is a medal given to a mathematician under 40 who has made a major contribution to the study of Mathematics. Fields Medals are awarded every four years to up to four mathematicians.

Staff members of the Lille Hospital appear as themselves.

The movie that Faunia watches while bored a few evenings before Christmas, is Ein süßer Fratz (1957). And on Christmas Eve the whole family watches Die zehn Gebote (1956).

This film is part of the Criterion Collection, spine #492.

Before starring in this film, Melvil Poupaud had auditioned for a role in director Arnaud Desplechin's 1996 film Ich und meine Liebe (1996), but he wasn't cast. Desplechin also wrote the male lead in Bruder und Schwester (2022) especially for Poupaud. In "Brother and Sister", Poupaud also played a character whose last name was Vuillard.