on en avait parlé

we had talked about it

→ on
phrase Rare #40,101
we had talked about it Here, on means “we,” and en refers back to something already mentioned.
FR: On en avait parlé la semaine dernière.
EN: We had talked about it last week.

On en avait parlé.

We had talked about it.

— Anatomie d'une chute (2023)

On en avait parlé, mais il n'en voulait pas.

We had talked about it, but he didn't want it.

— Assurance sur la mort (1944)

On en avait parlé, il te mate tout le temps.

We talked about it, he's always staring at you.

— La Vie d'Adèle - Chapitres 1 et 2 (2013)

Je pensais qu'on en avait parlé.

I thought we talked about it.