you don't know him/it
Comment ça, vous ne le connaissez pas ?
What do you mean, you don't know him?
— Cinema Paradiso (1988)
Vous ne le connaissez pas, mais lui vous connaît.
You don't know him, but he knows you.
— The Money Maker (2026)
Vous ne le connaissez pas, mais moi oui.
You don't know him, but I do.