system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] Did Bail know that Anakin survived and became Vader?

Bail knows that Leia is Anakin's daughter.  Does he also know that Anakin survived his duel with Obi-Wan and became Vader?  If so would he have ever told Leia?
gpt
More than likely. Senator Organa pretty much committed treason against the new Empire by harboring two Jedi masters. He was there when the twins were separated, one can assume he knew at least who Vader really was. And after seeing the new Vader, he could have probably put two and two together. 

However, it is highly unlikely he would have ever told Leia about it. That could have made her seek out Vader and caused all sorts of problems.