I mean it says Bane was Talia's protector in the prison. I know Bane was in a prison, but he was carrying out his fathers sentence and was exposed to what made him super strong.
I didn't think Talia was born in a prison either?
I don't know EVERYTHING about Batman. But I try to follow it pretty closely.
Also I thought that Alfred nursed Batman back to health when Bane broke his back?
JW about these things.