If you sell Dammon a +1 Dagger in Act 1, he'll still have it in his inventory come Act 3, because BG3 uses the same NPC ... Halsin's Journal Vol. 2 is another curiosity you can find out here.
I will go through each act of BG3 and list the offered time-constrained quests and encounters. During Act 1 of BG3, your progression will mainly include interacting with new potential Companions ...
Barkskin Armour is one of the best armor options in Act 2. Similar in appearance to the Hedge Wanderer outfit, this rare, medium armor boosts you to AC 16 and provides an advantage on Constitution ...