Huh?
The PNF calls Autobrake off........?
So is that a statement of observation or an instruction to the PF?
Why disconnect the Autobrake so early?
The observation of the Decel light and the Aircraft slowing appropriately should be sufficient for the commander to observe all is ok. ( I say commander because after all it is his responsibility no matter who is driving the ship )
Then later the PF advises the PM "manual braking" just to let him know what is going on.
Why complicate it?
Worked for my mob this way on all types ( A and B ) for 20+ years and none of our Aircraft have had any issues...