How to set all layers as input on cli same as plugin

I need to find how to add into the command line the option showed on the gimp plugin for all visible layers on the input/output section.

I only use
gmic.exe -input MDSC_0303_IT2.tif MDSC_0310_IT2.tif -blend average normalize 0,65535 round -output test2.tif

As I can’t do it it seems on the command it is considering to use the option active and below as the result looks similar to that one.

Any idea how to do this change


Works for me. E.g.,

gmic sp tiger,flower,chick r . blend average n 0,255 round o blend.jpg

r . means resize everything to chick, which isn’t necessary since your images have the same dimensions.