Partner Visa 309/100

My wife and daughter have been requested to go through medical examination. Usually what is the expected time frame after health examination for visa grant ? Secondly is there an automated email which informs that case officer has been assigned ?
Hi we went for our medicals in November 2016, to date no CO assigned and no visa grant
Hi we went for our medicals in November 2016, to date we have not had a CO assigned and still awaiting our visa
I got my visitor visa after medical in 2 weeks( and that was last year. Don't know how much time it takes now .