Which convection cell in the atmosphere connect the polar jetstream and the subtropical jet stream?

The convection cell that connects the polar jet stream and the subtropical jet stream is known as the Ferrel Cell. This cell operates between the polar cell and the Hadley cell, facilitating the movement of air and influencing weather patterns. The Ferrel Cell plays a crucial role in the dynamics of the mid-latitude atmosphere, where it helps to transfer energy and moisture between these two jet streams.