Actually, the GA should have cleared the Breezeway lane and roped off the General boarding lane before calling for Zone 1 boarding. The OP shouldn't have had to point out the obstruction to the agent. (I'm not complaining - just pointing it out).

BTW, I have consistently seen Delta implement and use the proper Breezeway boarding procedure. Thanks DL ^ NW had their 'breezeway' like access but it never seemed consistent to me. Whereas on DL I have seen the GA rope off the General boarding lane and flatten out the Breezeway carpet 99% of the time.

-RM