In other words: an idle reverse landing with no brakes should not trigger a FOQA event.
Which Airbus type?
On my type the Braking Delayed at Landing FOQA event is triggered by the length of time to slow to 50kts
after slowing 10kts from touchdown speed. It is invariant of Reverse selection.
And clarification to my above - it does also flag other colours, but it almost always ends up red if you have REV IDLE selected and no manual braking.