Thank @OSUblake
I just updated the topic with the embedded video. I see your point - could be a route to take, though behind the scenes, the horisontal scroll is actually a separate React component, that can be used from a headless cms. The client should be able to rearrange the order and such as they please.
I was wondering if the trigger property on the scrolltrigger for the horisontal scroll could be updated to not listen for the container but a viewport scroll position? If I know that there are three sections before the horisontal scroll - each with a height equivalent of viewport, one I could calculate the offset before the horisontal scroll should happen.. ?
The problem with this of course, would be that I would have to also know about all the other types of sections to appear before these gsap sections.