One way to look at this is that most techniques are 'combinations' in that the first technique failed so you move to another. For instance we practice shomenuchi sankajo ichi as a failed ikkajo ichi where uke starts to escape forward.
We also occasionaly do a nice set where you start with shihonage, take uke down gently and they roll around out of the lock so you change to kotegeishi, they then spin out on the floor again and then you finish with ikkajo, or iriminage.
I like these sets for several reasons, the main one being how you get a sense of 'waiting' for uke at each change. It becomes very apparent how your timing is very dependent upon uke.