פירוש על קידושין 100:6

In this version, Abaye now rejects Rabbah. When the man has not performed any act of kiddushin, it is obvious that the gifts he sends are not kiddushin. But when he first betroths her I might have thought that the gifts are for the sake of kiddushin. That is why the mishnah needs to tells us that they are not.
So now we have a dispute between Abaye and Rabbah over whether gifts sent not following kiddushin can be concerned kiddushin.