Updates: got the visit visa. Sharing the timeline ~
Application submitted in Christchurch office: second week of Aug
Received first call from Christchurch office: third week of Aug
Received acknowledgement email from Immigration Profiling Branch, Wellington: last week of Aug
Application accepted for processing: second week of Sep
First contact from IPB for further documents: last week of Sep
Documents submitted: first week of Oct
Final decision for successful application: third week of Oct
Total duration for processing: 9 weeks
Thanks alot!