https://www.canadavisa.com/canada-immigration-discussion-board/threads/oci-process.254662/post-9619217
Passport Surrender
Mode: Walk-in
13-July: Submitted at BLS Brampton
14-July: BLS Tracking - Under process
16-July: BLS Tracking - Processing at Consulate General
26-July: BLS Tracking - In transit from consulate general to BLS centre
27-July: BLS Tracking - Ready for Pick up
Got my Indian passport with surrender stamp and surrender certificate
OCI
Mode: Walk-in
13-July: Submitted at BLS Brampton
14-July: BLS Tracking - Under process
16-July: BLS Tracking - Processing at Consulate General
20-July: Under process at ociservices.gov.in/statusEnquiry
10-Aug : Dispatched From MEA (OCI ) NEW DELHI
10-Aug : Document received At TORONTO
11-Aug : Ready for collection to BLS Centre after OCI stamping
11-Aug : Collected the OCI card in person
Process for passport surrender and OCI completed in less than a month. Good luck everyone.