Leaflet/Open layers like view/projection synchornization with 3d view without external libraries.

Is it possobile to achieve this kind of behaviour (https://openlayers.org/ol-cesium/) but without open layers? I mean, current 2D view of cesium is more like 2D representation of 3D view rather than full fledged 2D map view. I haven’t used cesium yet, so maybe it’s not very clever question, but I’m searching for alternative possibilities for my project, so wondering if it’s even possibile to use cesium as 2D primary view and 3D as secondary.