Can it be that you want to execute the same program simultanously on two different chips? If so, you'll need a synchronization feature between them, since they may not startup perfectly parallel, there are some uncalculatable delays.
If you tell us a bit more about what you want to accomplish we might help you better.
Since CapSense is not a passive process but an active one where some C is charged and measured one PSoC chip will influence the other when using CapSense on the same buttons / sliders. Additionally it will not be guaranteed that both PSoCs come out of reset synchron. So your explanation will not be enough. The remaining question is: What is the idea behind those two PSoCs, what job ( mission are you trying to accomplish this way?