Board Thread:General Discussion/@comment-3244769-20160228202309/@comment-45691375-20200505014708

she def had knowledge of her bankai before going to the royal palace. Her boost in power most likely just boosted her control of it as well as its inherent power. She did not learn bankai up there with no previous knowledge of it. That would be nearly impossible. Shes already aware of the time limit and how to ease it back down (temperature) and at the end of her bankais use she even comments about how she maybe went over the time limit. She at minimum had knowledge of it before going to the palace and she most likely even had minimally trained her bankai before going to the palace.