I was hoping someone else would chime in here because you obviously have a problem with what I say. Not sure how someone can have a hard time being questioned about something they know little about.
If there has been no activity between the pair, it is possible there may be a huge issue keeping them together for a few more months. You could add stress to them and place them at a higher risk of RI. An even bigger concern would be one may become aggressive towards the other. My advice would be to separate them and perhaps re-introduce in a month to see if anything changes.
Keep the daytime temps normal. I recommend a warm side in the upper 80’s. You say you set them back up to 80…still too low in my opinion. There are countless reasons why your animals may not be hooking up. Temps would be one of the last factors I would consider at this point.
If you are relatively new to chondros as it appears, I would suggest you keep them for a few years before pairing them. Get to know the animals first. You can read books and websites forever but they won’t give you the first hand knowledge I feel is essential.
Now you can take this advice for consideration and ask for other opinions which I am sure many member would be more than happy to offer, or you can, again, let you pride get in the way, respond with some sarcastic remark, and become the next great train wreck in this community. My guess is that you would have already received additional advice had your responses in this and other threads been a bit less arrogant.
Good luck,
Bart