wooden and emerald kinesis pipes can't input into a redstone furnace from an energy cell or BC engine, needs another type of kinesis pipe between. tested with creative engine, wood, emerald and cobble kinesis pipes and resonant furnace and resonant energy cell

also a wooden/emerald kinesis pipe is required to get power out of the energy cell, is this intended?

Wooden and Emerald pipes are extraction pipes. They take power out of stuff and into a pipeline. None of the other pipes are able to do this. This is intended as far as I know.

In a similar way. Wooden and Emerald pipes are unable to take power from a pipeline and into a machine. To do this you must use a different Kinesis pipe. Also intended.

thanks for the clarification

@SandGrainOne: Correct!