No, the bypass air in a turbofan is still directly driven by the fan, it's only bypassing the turbojet that powers the fan. This is using the coanda effect to

No, the bypass air in a turbofan is still directly driven by the fan, it's only bypassing the turbojet that powers the fan. This is using the coanda effect to use a little bit of driven air to move a much larger amount of air for thrust. While quieter, it is only efficient at low speed and it takes a physically much larger engine to produce the same max thrust.