“Partner Brian Cullinan mistakenly handed the back-up envelope for Actress in a Leading Role instead of the envelope for Best Picture to presenters Warren Beatty and Faye Dunaway.
That said, this year may mainly be remembered for a less joyous historic occurrence, perhaps the greatest gaffe in all Oscar history: with presenters Warren Beatty and Faye Dunaway mistakenly naming La La Land the Best Picture winner, after being handed the wrong envelope.
Eagle-eyed viewers soon noticed that the envelope Beatty was handed was, in fact, labelled ‘Actress in a Leading Role’, which itself went to La La Land’s Emma Stone; except, Stone herself noted she was still holding her winning envelope.
Once the error occurred, protocols for correcting it were not followed through quickly enough by Mr Cullinan or his partner.”