Secure BLE DFU sequence diagrams

[dingari]

I'm looking at the sequence diagrams for the secure bootloader, and I'm confused about the response procedure opcode for Packet Receipt Notifications (PRN). From the diagram, the packet is identical to the CRC calculation response.

Is this an error in the documentation? If so, what is the response procedure opcode for PRN?

For reference, I'm looking at the diagram in SDK 12.2.0, but the diagrams are no different in SDK 13.

infocenter.nordicsemi.com/.../lib_dfu_transport_ble.html

Edit: I've checked this manually with gatttool for Linux, and the packet receipt notification content is actually

60 03 01 <offset> <crc>

Why is the PRN using the same opcode as the CRC response (0x03)?

[Aleksander Nowakowski]

Both PRN packet and CRC Calc response have the same data (crc and offset) and are handled almost the same way. I guess it was designed like this to simplify the code of the bootloader. If they were different one could ask why are they different if they have the same meaning :)