From the Amazon Basin forum:
Quote Originally Posted by onderduiker
The only time a skill's attack rate won't be affected by this 11 frame delay is if the remaining length of the attack animation after the action flag is equal to or greater than 11 frames. This 11 frame delay doesn't interfere with sequences of attacks, regardless of whether they can be interrupted (like Fury) or not (like Zeal): later attacks aren't delayed or stopped, and simply reset the 11 frame delay.