you asked how long till you could put them together since they get ALONG during tent time.....they are having contact during tent time (touching areas that other touches) Hopefuly you new baby does NOT have any health issues...sometimes they have and show no symtoms which is why you need to have a check up..be sure they do a fecal...since they have been together during tent time I would say after you get ok from vet it would be ok....many here will say wait abit to make sure unknown symtoms don't show up...just watch them...Finster is just scared..he is not use to another glider it will take time. What is advised is when you get a new glider..YOU leave them alone for several days so they adjust...since you just got him and have already done tent time you didn't do that.
I suggest that you go into glider gossip and read all the posts...you like many many ppl did not do research prior....read everything you can and go into the chat room to ask any live questions...most times there are some very experienced glider owners in there that can really help. Good luck...