Just trying to understand...., - Are you saying through the quoted statements above that setting TOGA thrust is contributing to the change in THS setting towards the NU setting? Wouldn't the increased thrust vector drive the THS to the ND position to maintain 1g, and not the NU which would exceed 1g due to pitch-up? That's how I'd be trimming a conventional aircraft...increase in thrust = pitch up (through increased speed and thrust vector), requiring re-trimming ND (to maintain altitude in a conventional aircraft, and here, to maintain 1g).
Youre right but only if they wanted to maintain 1g flight.
They wanted up, SS command >1g while A/C response was down <1g.