Since I was thus far not provided with an answer I wanted to share my own interim solution:
Step 1:
In Elementor, select the section that holds the Sina Banner Slider. In the Layout tab, set height to “Fit to Screen”.
Step 2:
Add the following site CSS
.owl-carousel {
z-index: 0 !important;
}
This prevents the banner picture from ‘spilling’ over onto the next section since it has z-index 1 by default.
Optional:
Reposition the text
On desktop:
.elementor-400 .elementor-element.elementor-element-b8d7106 .sina-slider-content {
padding: 20% 30% 15% 10%;
height: 100vh;
}
On mobile:
@media screen and (max-width: 767px) {
.elementor-400 .elementor-element.elementor-element-b8d7106 .sina-slider-content {
padding: 50% 5% 0 5%;
height: 100vh;
}
Not sure how good of a solution it is since I am not a professional but it seems to work for me at least.