One finishes both Shmone Esre and Kaddish with the very same "Oseh Shalom", often including 3 steps back.
One can say Kaddish before one said Shmone Esre's "Oseh Shalom"
When the Kaddish definitely involves 3 steps back, and one says "Oseh Shalom" for Kaddish, before one has said it for Shmone Esre, does it count for Shmoneh Esre too?
Or should one say it without taking 3 steps back, and then when finished, say it again for Shmone Esre?