nRF52811 write to flash

Studying the documentation for the nRF52811, I found a difference in the description of memory recording and memory erasure:

write: " The CPU is halted while the NVMC is writing to the flash."

erase: " The CPU is halted if the CPU executes code from the flash while the NVMC is writing to the flash"

And for example, for nRF52833 in the documentation for both writing and erasing, it is written the same way:

write, erase: " The CPU is halted if the CPU executes code from the flash while the NVMC is writing to the flash."

This is an error in the documentation or a feature of the nRF52811?

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