I can tell you with almost 100% certainty that it would be classified as a Covid-19 death. Put yourself in a doctor's shoes what would you put as cause of death?
I have certified death before when I was a GP in Singapore. In fact I worked on a service that answered referrals from Police and the Casket companies.
The best are those cases that have a folder from Hospice. Indicates what cancer they have etc. Just copy.
Those that are elderly with history of heart disease, diabetes, hypertension etc. Take a history ask what happened eg the guy had chest pain then collapsed then died. Can certify as Acute Myocardial infarction. Or if the family say oh he slurred his speech had facial asymmetry, paralyzed died after that then is Cerebrovascular Accident.
Then you add all the contributing factors eg diabetes mellitus, hypertension and what not.
Age is a big factor. If the person is elderly then it is easier to certify death. Although the doctor should always look out for signs of injury or foul play.
The trickier ones are those that are younger eg 50s 40s. Those one if they have no underlying history eg cancer or previous severe heart attack etc (and most times I wont know and cant confirm cos I am not their usual GP and have no records and sinkies dont keep records anyway) then I will say I cannot certify death. either call to send to coroner or find another GP who will certify. (And there are GPs will certify anything death and cook up reasons) Which is why you have heard of GPs getting disciplined for certifying cause of death as "Generalised Weakness" or something dumb.
https://www.straitstimes.com/singap...-in-false-death-cert-case-guilty-of-3-charges
I have also had cases where I talked to the son and he said he came home and found his father dead in the house. Father lives with autistic son. Father was healthy in his 60s no medical history of note. Suddenly dead. I told him I cant certify death. Call the police. And the son says err the police are here they ask me to call you to help certify death. I ask to speak to the police officer there. The police officer tells me "Sir I dunno lah. This guy father died. So we ask him to call you see if you can certify death. You certify then we just go back file report with cause of death and say natural then close file."
I told him don't you know this could be possible unnatural cause of death? Police says"Sir some GP will certify even if like that. Makes our life easier."
Fuck singapore police lah. useless jokers.