We also applied on March 5. My wife is applying for Fanshawe and I applied for an OWP.
The weirdest thing happened... Yesterday, we both received a letter confirming the validity of our biometrics (they are valid until 2031 because of our previous application). Then, I received a passport request and in my profile, it said that my application had been approved and I needed to submit my passport to the nearest VFS. However, my wife did not receive a passport request.
I believe it should arrive shortly given that she is the main applicant and my application relies on hers being approved. Another option is that they made a mistake in sending me the passport request letter.
So weird...