will help increase the reviewers ' confidence further and resolve any remaining doubts

We thank all reviewers for their thorough reviews. We'd like to remind reviewers that our proposals significantly improved the baseline and advanced the state-of-the-art on "Can SGA be used at training time as well?" We will provide detailed results in the final version of our paper. Unfortunately, the rebuttal period was too short this year to generate a full analysis in time. "improvements from bitsback coding are relatively marginal" We expect it to enable research on much more powerful hierarchical prior models for neural compression.