Why so much incertitude in your words for documented facts ?
https://en.wikipedia.org/wiki/September_11_intelligence_befo...
Also the french journalist that has authored the article “September 11: the French had long known” got prosecuted for breaching state secret by exposing that France services had prior knowledge and had passed the information in january of 2011.
The probe against Dasquié stems from his April 16 article
in Le Monde, titled “September 11: the French had long
known,” which said French intelligence services, the
General Directorate of External Security (DGSE), had
warned their U.S. counterparts of a possible terrorist
plot that involved the hijacking of planes and crashing
them into buildings some eight months before 9/11,
according to international news reports.
The article contained excerpts from a DGSE file titled
“Aircraft hijack plan by radical Islamists”—part of a
328-page classified report on al-Qaeda activities, which
Le Monde said it possessed. One excerpt from the report,
dated January 5, 2001, said al-Qaeda had a list of
potential airline targets, which included the United and
American Airlines carriers used in the 9/11 attacks, the
AP said. Le Monde said the DGSE files in its possession
contained maps, analyses, graphics, and satellite photos,
Deutsche Presse-Agentur reported.