Can Page Scroll work on a Full Viewport Div instead?

Without going into too much detail, I created a site that uses a full viewport slider.

The slider is contained within the viewport and each slide is set to scroll overflow.

My problem is that I want to add page scroll animations but they’re not being triggered.

Technically the page isn’t scrolling, the slider div is… so I get why it’s not working.

I’m just looking for a workaround.

Is there a way to use custom code to make the interactions triggered by a div other than body?

Any help would be great.