Yeah, that's not how the rear suspension works...
There is 4 links per side, UCA, LCA, trailing link and toe link. The LCA, trailing link and toe link simulate a normal LCA in a double wishbone suspension.
Camber changes with suspension travel because the UCA and LCA are different lengths, the toe arm fits in to keep the wheel straight as the suspension moves.
The reason adjusting camber from a LCA affects toe is because the toe link and LCA are parallel so lengthening or shortening the LCA without lengthening or shortening the toe link will definitely throw toe off.
If you adjust camber with the UCA you don't really change toe since the toe link is part of the lower arm system.
LCA is on the right, toe link is to the left of the axle.
