AWS S3 Glacier Flex

If I create a lifecycle policy rule of 2 days on my S3 bucket to move that data to S3 Glacier Flex for Storage. 1. Will that rule move empty parent directories created by rsync to glacier flex and then charge me for filling those directories with new objects if rsync only fills those parent directories with files 2 days after the parent directory has been created? 2. Or does the flat structure of the S3 bucket prevent that?