Does "overlapping" only use the collision bounds

Just curious if the event "is overlapping another object" uses collision bounds, or if it uses sprite box.

I actually need to check sprite box, so I may have to handle that myself in an expression of overlapping only checks collision bounds

It should use collision box.

Recommend invisible helper sprite in container/pinned if you need a second collision box.

Looks like I can also use BBoxLeft,BBoxRight, etc, in expressions too. But I didn't even think of your idea, good one!