TRENDYLOVE

Midnight Sons vs Black Order. My turn (MS) i play Siege of Darkness and attack with Blade first, Blade KOs Corvus Glaive, my opponent (BO) plays Blood to Spare for Corvus while i still have Baron Zemo to attack with, Corvus attacks Zemo and KOs him. The question is did that play out correct or would i finish all of my attacks with Siege of Darkness before opponent can play Blood to Spare or did the events occure correctly but Zemo would still get his attacks from Siege before recieving the KO?