What is the correct order of steps in Duo Multifactor Authentication?

1 Request Login2. Connect to SAML server3 Duo MFA4 Create User session5 Authentication Granted 6. Log into Splunk

1. Request Login 2 Duo MFA3. Authentication Granted 4 Connect to SAML server5. Log into Splunk6. Create User session

1 Request Login2 Check authentication / group mapping3 Authentication Granted4. Duo MFA5. Create User session6. Log into Splunk

1 Request Login 2 Duo MFA3. Check authentication / group mapping4 Create User session5. Authentication Granted6 Log into Splunk