Thank you for all your reply. We have not applied for OWP and in my understanding my partner is out of status right now. I'm approved as a sponsor and for his side, he is done with his medicals and biometrics, eligibility is in progress and criminality hasn't started.
Also, from Etobicoke, the application now got transferred to Niagara visa office after we reached out to MP for help. Does anybody of you know if this is a good sign or the visa office has a track record similar to Etobicoke being slow?