Hello Mattias,
KW2xD supports Dual PAN. The current ZigBee support for KW2xD is BeeStack 5.0.0 which contains some DualPAN ZigBee demos.
The BeeStack 5.0.0 framework is not compatible with the latest Connectivity Software for KW2xD (SMAC, MAC, Thread) available in the MKW2xD_Connectivity Software which is KSDK based.
We are working to enable ZigBee 3.0 stack in the upcoming months for MKW41Z. The Connectivity Software for KW41Z supports multiple stacks: SMAC, MAC, Thread, BLE, GFSK and ZigBee (upcoming).
Hope this helps.
-JC