Clue 4 might make it a bit clearer - My debut race in F1 was the same race as Gilles Villeneuve (although I did have a DNQ at the previous race) and I ended up getting a drive in the McLaren over Gilles for the following season.
Doh!! I think TBY has got it. Should have got that sooner.
Very bizarre for Villeneuve. He makes his debut in a Mclaren alongside the guy that he would eventually smash into costing him his life and the guy who takes his Mclaren seat is the same guy who takes his Ferrari seat. It's a funny old game.