The world knew Taliban would probably take control in weeks, months or half a yr. But your link indicates neither Ghani or Biden knew it would fall in just 11 days:Biden knew.
Exclusive: Before Afghan collapse, Biden pressed Ghani to ‘change perception’
In the last call between U.S. President Joe Biden and his Afghanistan counterpart before the Taliban seized control of the country, the leaders discussed military aid, political strategy and messaging tactics, but neither Biden nor Ashraf Ghani appeared aware of or prepared for the immediate...www.reuters.com
"The American leader’s words indicated he didn’t anticipate the massive insurrection and collapse to come 23 days later. "