It doesn't make sense to me.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
teechrIt doesn't make sense to me.I'm guessing it could mean if the internet access is available (or whatever the condition is since I can't quote it now) in those situations that the listener has encountered.
teechrI suspect "instance" is technical jargon in some specific IT field.I think you're right. It comes from a technical manual that seems to be using the word deliberately and (presumably) correctly. I suppose it is one of the meanings explained here: