I wanna believe that the "el rata alada" thing from The Batman movie is what actually gets Bruce to learn languages as a part of his Batman training.
Like before he was focusing on the detective stuff and fighting abilities but after that he's like "shit that was embarassing I guess I'm gonna have to just sit down and learn all these languages now so this doesn't happen again"
Also years later a Robin will ask him why he knows so many languages and Bruce will respond with "uhh, knowing languages is just useful in what we do."
Then Gordon just looks at him with a disapproving grimace and says "so, you didn't tell him about el rata alada?"