It depends on how close you are to the object and what ‘sins’ you can hide with speed.
Are you running that as children of one of the parts (like the earlier thread) or something else now? With a child based object you can do a spline wrap but that will bend the objects with the spline (so it depends on how close the camera is and how fast the anim is and how tight the bends of the spline are).
I think there are other solutions but the simplest might be to make all the objects separate (for the follow the spline part) make sure their center is in the right place and have them all follow the spline with their own Align to Spline tag – but each with their own offset so they stay spaced correctly, the spline probably will need to be Uniform Intermediate Points.
– perfect alignment where the objects meet will depend on spline bend so once again, how much bend, how close is the camera, how fast is the shot etc?
Maybe a joint/bone chain spline wrapped, I’d have to test. Here’s some examples but I’m sure this is not the only way just a couple ways.
11708_flangedcuffsplinealign.c4d.zip