In my interpretation, that was more or less them providing an example of using a non-magical attack while simultaneously charging a magical attack. 

From most, if not all, T1 based fights I've seen - it usually works the same at low and high. Charge the magic(any magic not charged is usually easily swatted/defended away, as it's considered fairly weak, without getting into the details of everything - which, honestly, would mean a fight probably wouldn't progress very far). More charges = more power, meaning more charges = more defensive power; O Line vs D Line cancel out, basically. 

But it's something we have to come to grips with, mainly for the ranks - as it could easily turn into a disagreement. We normally don't have any problems with it, as I can't recall a single one.