This video view shows the  lane arrnagement: https://youtu.be/APnZ79tdtmY?si=aF0e_Hk9_u4dCL0U&t=37
While the lanes don't appear to be physically separated (there may be bollards, I haven't seen on the ground), the lane arrangement and location of the spur towards the dumbell junction means that traffic routing needs to be separated onto these ways. Happy to resolve this comment, but will leave to you in case you have any other thoughts/concerns.