How can edge loops move independently and stay connected? I have two edge loops that are moving in an animation. The edge loops are different in shape and number of vertices. The animation below shows an example of the edge loop shapes and their movement.

 

Using 'bridge edge loop', I can generate a geometry that blends between the two shapes, but it is not obvious how to animate it so the edge loops can be animated.



How can this geometry be animated so the edge loops can move independently and stay connected?
Animate the bones of an Armature in Pose Mode.




Above is quick armature which you can greatly improve.
An armature modifier was created.
The master bone has deform disabled.  The other two bones deform the mesh.

A vertex group is selected to show weights.