What was the role of the National Intelligence Organization and its head Hakan Fidan in the 2016 coup attempt?

Allegations that the National Intelligence Organization concealed the coup warning, its head Hakan Fidan's meeting with the President of Religious Affairs on the night of the 2016 coup attempt, and Press Advisor Nuh Yılmaz's calls to direct journalists have raised thousands of questions about the exact role of the intelligence agency and Fidan in the events.