This may be one of the most uncomfortable ways to make an exit.
The BBC has just released audio of the end of the cringeworthy interview for all of us to enjoy.
The actress was asked by presenter Simon Mayo if they had received any permission to film outside of Kensington Palace, which Watts quickly responded by saying that they were indeed allowed to film there.
But that question seemed to have ticked off the blond actress.
Immediately following her answer she told Mayo to "wind it up" and that their time was finishing.
Mayo pointed out that they had been granted 10 minutes and that it had only been eight-and-a-half.
"Can we perhaps finish the interview as we started? Otherwise we can't use it."
Watts repeated that they needed to wind it up because her team was "running late" and didn't go into detail about why she needed to step away from the scheduled interview.
After she stepped away, you can hear her team helping her out of the room and then radio silence. Awkward to the max.
Mayo later explained that a technical assistant from the BBC had been in the room with the Diana actress herself and that she made the decision to end the chat, not her team.
We wonder what rubbed Watts the wrong way…
One thing could be irking the Aussie actress, the reviews for the highly publicized film.
Some critics claim that the biopic makes a valiant effort but ultimately misses the mark in portraying the late princess because of a weak script and clumsy dialogue.
But viewers can soon decide for themselves. Diana is slated for release in the U.S. on Nov. 1.
—Additional reporting by Holly Passalaqua