Return of the ‘flu – or is that “Return of correct diagnosis of the ‘flu and pneumonia”?

diagnosis of the ‘flu and pneumonia”? 

How many people died from (untreated with antibiotics) pneumonia that were categorized as C19 deaths? If the Drosten RT-PCR test could not distinguish between different ‘flu viruses and strains, could it differentiate between lung infections from pneumonia and C19 disease?