Dont need to run either of them, there's 3 portals on that one path. The one directly below as you spawn leads into there. That's the one I left to last, and when I realised. Hence I had 98% completion and had to rerun costing another energy refill
Not sure, I'm still working my way through cav - hopefully someone lower can comment
@Pulyaman so the inner two (Havok & CW) only have 1 teleport route opposed to two in the lower map?