Here is my parent sponsorship timeline if this helps anyone in the future. I think our case was the first one from 2019 batch to go to Warsaw.
Invitation email April 25, 2019
Application sent April 26, 2019
Application received April 29, 2019
AOR July 11, 2019
Bio requested July 31, 2019
DM for sponsor August 1, 2019
Bio completed August 15, 2019
IME requested September 3, 2019
PCC requested September 5, 2019
PCC submitted October 8, 2019
IME submitted October 8, 2019
IME passed October 11, 2019
DM for applicant February 18, 2020
PPR February 19, 2020
Applicant is from Kazakhstan. Good luck to all!