The place some piece of electronic communications resides between sending and receiving. Usually only noteworthy when the delay is pronounced.
Wilma: Why did not not answer my text? Dino was choking!
Fred: I never got a text from you.
Wilma: Bullshit, show me your phone!
Fred takes out phone and shows recent texts with none from from Wilma...
Wilma: My text must be stuck in the e-taint.