Hardly what? You think the statements are an accurate record of ever word the witnesses said do you?
Feel free to thrash this point as much as you wish.
Sedation was important for two key reasons.
First was the health of the twins. Presumably when Kate left them alone with a supposed abductor around in order to inform the T9 that Madeleine was gone, neither an abductor or sedation was uppermost in her mind. Because if either was, then I would class that as a major fail.
Second was the evidence. Failing to inform the PJ about possible sedation would also be a major fail, assuming it was suspected. That would have been a key piece of evidence, vital in the police quest. Yet this does not enter the statements of the T9 contemporaneous to Madeleine's disappearance.
Please don't trot out the 'well it may be that not everything was recorded' tripe. That would be libelling the PJ officers doing the interviews and the interpreters.
Not even Kate claims she raised it with the Portuguese authorities. Thus claims otherwise are pure speculation. And we know what happens to pure speculation on this forum.