To backup your words: "If the CRC is not correct, the transfer is not acknowledged and will be retried. If the device is not ready to accept data it can send a negative-acknowledgment, NAK, which will cause the host to retry the transfer", source: https://www.xmos.ai/download/Fundamentals-of-USB-Audio(1.0).pdf
This is not true for 99% of USB Audio Class devices. It only applies to bulk transfers, not isochronous transfers.