Amanda said there were "blows to the head", and she claimed that she was beaten for somewhere between 10, 14, 41 and 54 hours (her lies, not errors in reporting). None of it was true.
If the discussion is about poor little Amanda being coerced into falsely accusing someone of murder after 2 hours of questioning as a witness, then I think it is important to give contect to her original claim. Her original claim was that she was interrogated for 54 hours (later modified to 2) and beaten (later modified to a cuff on the back of the head by someone that she cannot describe). After removing the 54 hours of brutal interrogation and blows to the head from the equation, all we have left is the completely unbelievable claim that she was forced to confess after 2 hours of questioning.
If we can have pages and pages about people that make false confessions, then we can certainly put Amanda Knox and her statements in proper context.
The "2 hours" tally seems to be yours alone, based on a beginning and ending time that you, and you alone, chose. Although the total number of hours of interrogation vary according to source, none of the links provided arrives at your total of 2.
As for physical coercion, you don't know whether AK was hit; I don't know whether AK was hit. Nobody who has criticized the verdicts has claimed to know whether she was hit. Coerced, false testimony is not always a result of physical abuse.
But since you are tired of evidence re coerced testimony, perhaps you'd like to provide us with evidence that liars are always killers, since that seems to be the crux of your argument against AK...