Really cool mechanics, as always. Loved the shared items and the turn timer.
I didn't get the "hold both items to continue part" though, was it time-based? I had them both on my side, and tabbed out briefly to see if there was an extended description here. Then I was back in the dungeon and picked up the flowers to end the demo.
Maybe you already did this and I forgot, but putting a turn timer counting down or something would help a lot.
If it's possible to ditch the waiting mechanic altogether and indicate success with visual feedback (that can then be confirmed with a keypress), you should. It would fit better with the rest of Long Etyliv's mechanics IMO.
