Two things: No mention of bash infinitely linking into itself, and about slow weapons

The timing is strict but it's entirely doable. A fighting game player with experience linking a tight combo would be able to catch onto it rather easily. The trick is not to mash click but to time it. You'll never link it by mashing the mouse button. I'll post a link to a video somewhere if my toaster will allow it. It definitely isn't a normal attack; dual-wielding makes the animation difference very distinguishable.

EDIT: The webM can be found at the website WebmUp with the video id 00795. Copypaste it after the first forward slash in the url, like webmup(dot)com/xxxxxx. The video demonstrates rank 6 but rank has no effect on being able to combo bash.