McCall was a retired Intelligence Officer, deliberately British, so people have enjoyed speculating who he may have really been during his career - Bond, Steed, or even Callan, same actor playing what is really the same character.
But yes, if McCall is the retired CONNERY Bond (think about it) then Control is Felix, still in the Service and now very senior. Even if it isn't literally them, that's kind of who they are based on
