it's very hard to know without seeing them.
I have a colony of 6, gus is the leader, at night he will sometimes chase others,
he is always chattering his teeth (making a clicking noise) at the others.
while he chases the others they make some loud squeaking, but this only lasts
for a few seconds.
In the pouch you can hear some louder noises at times.
and while eating one may want to try to steal food and there can be a small
so without seeing them, its hard to tell if they are making normal social
noises or really having problems being together.
the lack of injuries and death make me think it is more likely just normal