Forum:Machina Fortress, Jinzo, and Jinzo Returner

Since the ruling on Machina Fortress is that it can be special summoned by discarding itself, am i able to use Machina Fortress's effect to discard itself, Jinzo, and Jinzo - Returner to special summon Jinzo and Machina Fortress at simultaneously?

also, if Jinzo is in the graveyard and i discard Jinzo - Returner to use Lightning Vortex, will that fulfill the condition to special summon Jinzo - Returner's effect to summon Jinzo from the grave?