Figured it out – it’s because I am not using “Slider Wide” – it’s currently empty.
I had hoped if I left a text widget empty, it wouldn’t show at all – but it is adding some blank space even when empty.
1) Any way to make it completely invisible?
2) If I put the slider text in slider-wide, my text blurb (left) and video (right) go too far out to the edges. Any way to restrict the size of the slider-wide content and make it appear just as wide as the slider widget?