When it comes to the middle of your bay track. You have 3 options to choose from. The first 2 options are custom made overlapping tracks. Either "right over left" or "right over left". The 3rd option is to have the connecting tracks with our heavy duty joining splice.
Choosing the overlapping tracks option. Allows your curtains to completely overlap when closed. This is a great option if you plan on hanging blackout curtains. As you get almost total light block from the middle of your window.
I even recommend it on non blackout curtain windows. As the curtains hang really well when closed. If you choose the track joining splice option for the middle of your track. Then your curtains will simply butt up together when closed.
Right over left
Left over Right
Joining Splice
Track Joint