Jabba's Palace and Rancor Pit: Look for the connection ...

Gunner, a Eurobricks forumer, ventured to offer a 3D rendering (on the left in the image above, the two visuals on the right are those of LEGO) of what the set of the two LEGO Star Wars sets could look like 9516 Jabba's Palace and Rancor Pit connected to each other.

If it is now obvious that LEGO designed this Rancor Pit with the possibility of inserting it under Jabba's palace, it remains to be seen how it was thought of. Since the palace tower is detachable, it shouldn't be part of the equation, and Gunner's 3D rendering leaves me confused about the orientation of the Rancor Pit.

I would wait to see the back of the box of the set containing the Rancor Pit to see how LEGO considered the thing from its side ...