When you play raids on Hard mode without having played said raid on Normal mode that week, then you will get the rewards from both, Normal and Hard mode loot tables.

It’s impossible. My fireteam and I killed the boss and got nothing. You’ve got to kill everyone to win.

I opened one of those chests. The key of Spawn dropped when I killed an enemy. I inserted the key of Spawn into the chest and got one Calcified Fragment, a rune and other item that I forgot the name but that wasn’t so special. I don’t know if it is always like that or I just wasn’t lucky this time. I was looking for…