What does 鏡越し mean in this sentence?


I encountered the word 「鏡越し」 while I'm reading a web novel, titled
『とある殉教者の訃報』by 鼠色猫／長月達平

Here is the full sentence.

> 「もし、これが **鏡越しの** 会話じゃなかったら、今頃、君はバラバラだったよ。そうならなかったことを、僕に感謝した方がいいんじゃないかな」

I googled 「鏡越し」 and still I couldn't find the meaning of this word. The closet
meaning I got when I used google translate was "Glanced up from glasses" and I
don't think it is the right translation for this sentence. How should it be
translated? Thank you in advance for your help.




Sounds like "through the looking glass" or "through the mirror". (Which I
think may refers to an alternate world/universe/timeline used as a metaphor to
illustrate what the present time might have been under different
circumstances)

Unless if it happens that in the setting of the story the mirror is a plot
device for actually going into an alternate world or communicating to the
alternate world (or going/communicating to somewhere else within the same
world) then it's not a metaphor.




Sounds like "through the looking glass" or "through the mirror". (Which I
think may refers to an alternate world/universe/timeline used as a metaphor to
illustrate what the present time might have been under different
circumstances)

Unless if it happens that in the setting of the story the mirror is a plot
device for actually going into an alternate world or communicating to the
alternate world (or going/communicating to somewhere else within the same
world) then it's not a metaphor.

