By end of March.
when will they send out the offers?
It doesn't sound like the actual top heads want to hire new phds, they seem passive or unwillingly pushed by someone.
My section's offer decision was supposed to be late March but got delayed because of the lockdown. Since Philippines isn't issuing visas, HR is going to update us April 14. But the lockdown just got extended till April 30 and who knows how much longer.
Did you get a preoffer?