even if (someone) is there, even if (someone) stays
トムにお兄さんがいたって、知ってた？
Did you know Tom had an older brother?
アフリカにいたって？
You were in Africa?
— イングリッシュ・ペイシェント (1996)
私がいたって彼がいうこと聞く訳ないじゃない。
It’s not like he’d listen to me even if I were there.
こんなとこにいたって誰も助けになんて来ないのよ！
No one's coming to help you if you stay here!
— One Cut of the Dead (2017)
牢屋にいたって
They said they were in jail.
— 道 (1954)
あんたみたいなのがいたって
Someone like you was there, after all.
— Godzilla Minus One (2023)