Sometimes gliders don't want friends. but we were successful every time
but one. We had 10 in a very large cage at one time.
I would put the cages 8 inches apart, so they can see each other but not
touch or grab a tail. use 4 pouches, 2 in each cage. the ones they sleep in
swap them. see if they go into the scented one or the clean one.
If Queso starts sleeping in the one with dips scent then after a few weeks you
could try introductions again. I would swap pouches every 4 or 5 days. If introductions work with out fighting, leave
them together and put in a clean cage with low scent levels. we would clean off one cage during introductions or put them in a temp cage till we liked how they
Introductions need to be in a scent free location, we used the bath tub.
you say "Hostile", but during introductions there can be a feeling out period
for a few minutes, who is the alpha? you dont want FIGHTING, but some spats,
or aggression, bossy glider can happen. sometimes one glider will climb all over
the other, feeling him out. So hostile can be ok for a SHORT time, you dont
want hurtful, or injury type behavior.