- Keeping the trim button pressed has the same effect then having FD enabled
- Therefore, if I don't have the trim button pressed while moving the controls (assuming FD is not enabled of course) I basically fight the autopilot inputs.
Short answer: yes.
Long answer: I wouldn't go as far to say that pressing the Trimmer button has the
same effect as the Flight Director mode - they are certainly two different functions! - but your point, I believe, is that autopilot control feedback is disabled in both cases, which is absolutely true.