User blog comment:Zathronas/Analysis by an author-Hiatus Edition: Jaune Arc/@comment-25405817-20141119163359/@comment-24218038-20141120044113

Yes there is a relation between Aura and Semblance.

BUT

Aura by itself is a shield, everyone has it. The bigger the natural Aura, the greater the shield.

When the user learns to focus his aura, it becomes something else. It becomes in tune with the user's personality and changes. Magnetism, Kinetic absorbtion, speed etc...

That's where I think you made the mistake.

Monty was referring to Jaune's aura when talking of his shield not his semblance. here's another reason why I think you misunderstood him.

From the episode Extracurricular:

Jaune: I'm actually thinking that maybe we skip Aura for tonight? Might go on a jog or something.

Pyrrha: Come on, I know you get frustrated. But you must keep trying. I'm sure you'll discover your Semblance any day now.