I believe the service standard is within 5 business days.
It has been over a month and this is what I got today---so I guess the 5 day standard isn't being met at this time.
The Disability Benefits Unit has received your Disability Application
and Medical Questionnaire. I am
unfortunately unable to provide you with an exact date when your
claim will be registered. The Disability Benefits Unit has a
backlog of applications and is working on each claim as quickly
as possible. You may periodically check for when your claim
in registered on My VAC Account.