well, maybe you’ll get lucky and happen on a consular rep who happens to the the one person in D.C. who doesn’t think it’s his/her personal duty to save the world from people like us
I think it depends on a lot of factors but the primary one is probably what consulate is processing it and how busy they are.
Mine was processed in Vancouver. I would say that most Canadian, would be travelers, are stupid lefty #MSM watching, obedient and mindless drones too afraid to even leave their living room let alone fly to a dangerous foreign country in Asia.
It also states on Singapore Air's site that the test is required to be taken no more than 48 hours before the flight. So that answers whether its before the departure or before the arrival.
"... required to take a pre-departure Covid-19 test within two days of their flight to Singapore".