The company isn't withholding the AD results indefinitely. We'll be getting a proper topline and full results disclosure for our AD trial at some point. (The "top line" will be in the full results, eg, the tails, the ADL % mean change, etc.)
The full KEM analysis is needed for the neurological trials as big claims require big evidence. This is particularly true since the goal is to prove the S1R/muscarinic mechanism of action will be applicable to multiple neurological indications. I also expect 3-71 to have equally thorough analysis build into the trial designs.
Also, $AVXL does not need EXCELLENCE to "save the day", but I'm sure it's fun to mention in the devil's advocate role.
Instead Anavex have blindsided the P2b/3 situation, continuing the deep work on the full KEM analysis in the background, while hopes of EXCELLENCE will save the day.