Larian Studios Forums Baldur's Gate III Baldur's Gate III - General BG3, DOS and the D&D rule-set

Strictly speaking not even that, because in DoS games, even it´s turn-based you do not have simultaneous initiative if your characters are together and you have an action cost in AP points that you manage to allow you to move and do actions, in BG3 you roll for initiative and then you have limited number of actions by type every turn: 1 bonus action, 1 move action and a standard action like in the D&D5e tabletop game.
Those are different TB combat mechanics.