Connecting Technologies case

Connecting different technologies can create a new synergetic quality.  

One notable example from the area which is familiar to me. The advent of aviation began with the first brave attempts of winged flight.

But only the connecting these flying machines with a propeller attached to a piston engine and finding a way to control it made it possible its evolution to the point of aviation becoming widely used both in commercial and military applications. 
By the end of World War II however the piston-engine propeller driven aircraft have reached their limit of efficiency and hit the speed barrier.

From the ancient times people knew there was another way of propelling the craft, which would allow reach practically any speed - rocket flight. It had one significant flow though - the thirsty rocket would quickly run out of fuel, limiting its application and preventing from commercial use.     

Neither propeller-driven nor rocket-driven aircraft could do more without a breakthrough.
New breakthrough came n the form of integration of both in one - turbofan engine! Exhaust gas from the jet is used to rotate the turbine, and the fan coaxial with turbine compresses the air improving the combustion. A portion of the incoming air goes into the combustion chamber. The remainder passes through a fan, or low-pressure compressor, and is ejected directly as a "cold" jet or mixed with the gas-generator exhaust to produce a "hot" jet. The objective of this sort of bypass system is to increase thrust without increasing fuel consumption.

Thus the integration of a propeller (fan) and a jet produced a completely new quality - the engine which is both fuel efficient and allows to achieve much higher speed. Most of commercial aircraft today use turbofan engines.