quand on aura fini

when we're done

→ quand
phrase Rare #46,235
when we're done Uses the future perfect to express that one action will be completed before another future action. Here, on means “we” in informal speech.
FR: Quand on aura fini le travail, on ira dîner.
EN: When we're done with the work, we'll go out for dinner.

Pour Neil, quand on aura fini ici, téléphone.

For Neil, when we're done here, call.

Et quand on aura fini, on se sépare et on rentre en stop.

And when we're done, we'll part ways and hitchhike home.

— Once Upon a Time... in Hollywood (2019)