The best way to answer this is to say they are independent. By that I mean Delay A and Delay B process on either input 1 and input 2 respectively or they both operate on input 1 in parallel. If you put a cable from the Output of 1 into the Input of 2. Then you are placing Delay B to operate on the already effect added Delay A. That's the more techie answer.
In musical terms… The eventide comes by default as a parallel delay. But you can easily switch it to be in series if you so wish. The thing I don't like is that I cannot change that simply in the middle of set with a preset change. I would love it if were possible to switch the routing via software.
