How earlier joint preparation could have reduced ABDA's disaster

Was ABDA Command doomed from the start, or were the Java Sea disasters preventable?

The disasters were judged preventable with earlier coordination and practice, although defeats would still have been likely.

The Java Sea disasters are judged preventable with more coordinated thinking and practice before the multinational force entered battle. That does not amount to a prediction of Allied victory in the circumstances. The proposed improvement is a loss that avoids the scale of the historical disaster. Preparation and experience of working together are the specific changes identified.