Sure, I can run out of box demo like your link
but out of box demo no release project and source code in "SDK_2.6.0_JN5189DK6"
I just can run for demo don't development it.
Anyway, I checked new SW release have more example project on NXP website yesterday.
and download those like below.
JN-AN-1243 look is out of box source code and studying and try it now.
But now those example project be remove from NXP website?
Not sure what status on those example project?
Maybe have video about to setup JN-AN12xx for JN5189 is useful for customer to quick run those.
So far, I reading document of JN-AN-1260-Zigbee-3-0-Getting-Started.pdf to try it.
Any question will post again.
Sorry, I'm not sure I understood your problem .
Maybe when you entered those were being updated , you can find the application notes you mention here.