I have a tour, I have hotspots calling the other panorama through zoom-on-hotspot and actions.
Code
<action name="v1-v2">
loadscene(scene_video2-video, MERGE, BLEND(1.5));
lookat(212,5,70); <!-- guarda porta v3 -->
wait(0.5);
lookto(105,-24,106, smooth(20,20,20)); <!-- guarda stanza video2-->
</action>
this result in moving the panorama BEFORE it is loaded.
No idea of a "wait the pano to be loaded" function?!