Yes. Simply make sure that Port A of each Delta-Link is connected to a Pro Tools card, as Port A is used to receive necessary control data (settings like the number of MADI channels, S/MUX mode etc).
So for instance, if you have a system with three Pro Tools card, the configuration would be:
Delta-Link 1, Port A --> Core card (receives control data).
Delta-Link 1, Port B --> Accel card 1
Delta-Link 2, Port A --> Accel card 2 (receives control data).
Delta-Link 2, Port B --> Not connected