A citizen of country
X (non-EU, non-Schengen, transit visa is not required) is travelling from the USA to country
X with a connection in Paris Charles de Gaulle. The airline is Air France and the ticket is "integrated" -- both flights to CDG and from CDG are on the same reservation. So presumably going through immigration in CDG is not needed.
Question: according to the current regulations, is negative PCR test required in order to board the flight for France?