When you play a map on Training mode in Versus AI, it opens with a preview of the objective. This doesn’t happen on Hanamura (possibly not Garden of Terror since it also had a map update? I didn’t check this one).
Warhead Junction does have the map preview despite being a later-made map.
Trying to introduce hots to a friend (he’s familiar with LoL) and he is overwhelmed with information not knowing how each map objective works.