Agree that it's silly not to replace the seals while you have the axle out. But yes, they have nothing to do with the outer wheel bearing.
My GTV's brand-new bearings had a small amount of movement in them from new, which Tom Sahines (Bay Area 750/101 guru) said is not at all unusual. Maybe a difference between Alfa and aftermarket bearings? Mine came from Centerline, I think.