Though to correct myself I just used Google Flights for the first time in over a year and they do in fact list intermediaries in a price comparison list.
For the specific flight I searched for, the 3rd parties were listed as having cheaper prices than the airline itself, but upon visiting the sites and going through the optionals etc those prices turned out to be misleading, and eventually it was cheaper to book directly through the airline.
For the specific flight I searched for, the 3rd parties were listed as having cheaper prices than the airline itself, but upon visiting the sites and going through the optionals etc those prices turned out to be misleading, and eventually it was cheaper to book directly through the airline.