Monster vs Hero turn rules seem totally different to the board game

[toastkid.williams]

In the board game rules, the Heroes each have a turn and then the overlord, ie monsters, all have a turn. But in the app, it seems like whenever I click "End Turn" on a Hero, it triggers the monsters to have a turn. So it's like One Hero, all the monsters, the other hero, all the monsters. (we're playing a two-hero game). This was in the tutorial. Am I missing something?

[toastkid.williams]

Found it: https://descent2e.fandom.com/wiki/Road_to_Legend

"Changes to the rules
Road to Legend introduces a new way of how hero players and the monsters take turns. The old way is for the heroes to take all turns, then the overlord to take all his turns. The new way will be to interlace the hero turns with the monster turns. The first hero does his turn, then the first monster group, then the second hero, then the second monster group, etc.[3]"