Forum:Machina Peacekeeper and Dark Coffin

Hello. I recently encountered an issue with missing the timing on my equipped Machina Peacekeeper. Say my opponent has a set Dark Coffin on the feild along with a face up Scrap Dragon while I control a face up Cyber Dragon equipped with a Machina Peacekeeper. If my opponent activates Scrap Dragon's effect, targeting his facedown dark coffin and my Cyber Dragon (or my peacekeeper), both Dark Coffin and Peacekeeper would be destroyed and sent to the Graveyard when resolving Scrap Dragon's effect. Dark Coffin would then activate in the Graveyard afterwords, in this situation I would then select my Cyber Dragon for destruction (Due to Dark Coffin's effect). Would my Machina Peacekeeper in this situation miss it's timing OR would it chain to Dark Coffin?