The irony in referring to the Caravelle is that its whole nose section, including the ADF aperture, was designed for Sud by De Havilland, based on the Comet itself (look and compare), and the first couple of Caravelle noses were actually manufactured for them at Hatfield.
Among the more extreme designs that followed was the Handley Page Herald, which had circular/oval apertures throughout, including where the flight deck is fixed into the front upper fuselage.
I never understood why De Havilland came back with the substantially redesigned Comet 4 but with the same name, instead of choosing a different model name for it.