Bulk Import Time

We are going to use "Bulk Import" to connect a snowflake DB with our Marketo instance. We will only be inserting person info once per day. I understand the size limitations on import load per day. A question my dev team had was once a job is queued, how long will it take for the file to be imported? 

Reason for the ask is they will need to wait for a response to make sure the batch was processed properly and they need to ping the endpoint to get that response. Is there a general SLA or average timing around success and failure messages I could send them?