Linked two or more XU200 devices howto chainboot from first

[mmar]

Hi , i have special question.
I read old topic about not available XN config multipackage use xud on multiple package.
For better example:
1. CPU XUF216 ... USB1
2. CPU XU208 ... USB2
...
xlink 2w or 5w

need boot factory or update both from 1.

Q1 exist way to use one XN and one code in new 14.4.x ?
Q2 when not , how join bin images from two or more xe to one flash?
I can for CPU1 compile xe and with XN define too CPU2 but fake code, then xflash -o create two flash bin files
Same way CPU2 -o create two flash bin files. On both is one bin fake aka empy. How join it to one chain boot ?