Interview done for b1/b2, Australia. Consular asked to provide more information employment history, invitation letter for conference and etc…and checked the box on the paper for administrative processing, any idea how long it takes for them to review my case? Passport was not collected!

Getting a coffee in Melbourne after 3pm

Has anyone recently had interview for b1/b2 visa in melbourne and refused, told by the consular to supply more information on the green 221g paper? He also checked the Administrative processing on the paper