Wondering why was the next(batch_it) sess.run was not incorporated in the in the immediately following sess.run in run_training_step() ? https://github.com/google/ffn/blob/3ea523c5475bacc2108df0071a8004f71dfbab65/train.py#L682 https://github.com/google/ffn/blob/3ea523c5475bacc2108df0071a8004f71dfbab65/train.py#L684
