Amund and Helena - The Death Timing

Amund and Helena may have died on the same day which isn't actually clear in fire and blood. The call sheet for Amund's character before the season had in the call sheet specifically mentioned he's in love with his sister Helena. I wonder if maybe she can't tell the difference anymore between like the dream world and the real world that's a fascinating take. to Helena and the setup they've done there we noticed something on Twitter someone pointed out a curiosity that I looked into regarding the death timing of Amund.