DFT GLS (No-Timing/Timing)

What is the Importance of the GLS?

Why do we need to do No-timing GLS?

Why do we need to do Timing GLS?

What if, ATPG pass and No-timing GLS failed?

What if, No-timing pass and Timing failed?

What if, Parallel is passed and serial failed?

What if Serial is passed and parallel failed?

What if, STA clean and Timing simulations failed?

and more......