I use my rear tiller to get the ground ready for seeding, then chain harrow the fertilizer in (agressive setting), them chain harrow the seed in (teeth up), then finish up with my roller.
Kubota M7040, Kubota MX5100, Deere 790 TLB, Farmall Super C
If you just use the tiller you will leave tire tracks in the soft dirt that will not come out. You need to pack or roll after tilling to get the "loft" out of the soil and press it flat. Then seed.